Quick view Details Milwaukee | sku: MIL600 Milwaukee pH 600 MSRP: Now: $31.95 Add to Cart Compare Quick view Details Active Air | sku: COTEST Active Air Co2 Test Kit MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Details Bluelab Bluelab Calibration Solutions MSRP: Now: $7.95 Choose Options Compare Quick view Details Bluelab BlueLab Waterproof Pens MSRP: Now: $89.95 Choose Options Compare Quick view Details General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details Bluelab | sku: BLCOMBO Bluelab Combo Meter MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details Active Air | sku: COTEST Active Air Co2 Test Kit MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Details Bluelab Bluelab Calibration Solutions MSRP: Now: $7.95 Choose Options Compare Quick view Details Bluelab BlueLab Waterproof Pens MSRP: Now: $89.95 Choose Options Compare Quick view Details General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details Bluelab | sku: BLCOMBO Bluelab Combo Meter MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details Bluelab Bluelab Calibration Solutions MSRP: Now: $7.95 Choose Options Compare Quick view Details Bluelab BlueLab Waterproof Pens MSRP: Now: $89.95 Choose Options Compare Quick view Details General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details Bluelab | sku: BLCOMBO Bluelab Combo Meter MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details Bluelab BlueLab Waterproof Pens MSRP: Now: $89.95 Choose Options Compare Quick view Details General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details Bluelab | sku: BLCOMBO Bluelab Combo Meter MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details Bluelab | sku: BLCOMBO Bluelab Combo Meter MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details Bluelab | sku: BLCOMBO Bluelab Combo Meter MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Details Bluelab | sku: BLCOMBO Bluelab Combo Meter MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details Bluelab | sku: BLCOMBO Bluelab Combo Meter MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details Bluelab | sku: BLPHMTR Bluelab pH Meter MSRP: Now: $199.95 Add to Cart Compare Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Details Bluelab | sku: BLSOILPR Bluelab Soil pH Probe MSRP: Now: $104.95 Add to Cart Compare Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Milwaukee | sku: MIL600 Milwaukee pH 600 Milwaukees most affordable pH 600, full range pH meter with a range from 0.0 - 14.0 ph. Milwaukees economical testers are easy-to-use and low cost instruments to measure quick and reliable pH, EC or TDS values. Measuring electrical conductivity is the... MSRP: Now: $31.95 Add to Cart Compare Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Active Air | sku: COTEST Active Air Co2 Test Kit We recommend measuring Co2 periodically to ensure optimum levels for growth. The Active Air Co2 Test Kit is an inexpensive alternative to costly electronic monitors. Use the tester kit to gauge proper Co2 level, as well as eliminate waste and... MSRP: $23.05 Now: $18.95 Add to Cart Compare Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Bluelab Bluelab Calibration Solutions The Bluelab Calibration Solutions are a very necessary part of a growers toolbox. They are required for the calibration and checking of Bluelab meters and controllers. Our solutions are manufactured specific to the calibration process and referenced to... MSRP: Now: $7.95 Choose Options Compare Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Bluelab BlueLab Waterproof Pens The Bluelab pH & PPM Pen provides a compact, quick and handy way to manage the success of your crops to ensure maximum uptake of nutrients. The PH pen features: * Measures pH and... MSRP: Now: $89.95 Choose Options Compare Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view General Hydroponics | sku: GHPH78 General Hydroponics pH 7.0 Calibration Solution 8 oz pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view General Hydroponics | sku: GHPH7QT General Hydroponics pH 7.0 Calibration Solution Quart pH 7.0 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $17.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view General Hydroponics | sku: GHPH48 General Hydroponics pH 4.01 Calibration Solution 8 oz pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $7.54 Now: $6.95 Add to Cart Compare Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Bluelab | sku: BLCOMBO Bluelab Combo Meter It's all you need for simple and reliable crop management and it's all within arm's reach! The Bluelab Combo Meter is a conductivity, pH and temperature meter all in one. The Bluelab pH Probe and the Bluelab Conductivity/Temperature Probe are simply... MSRP: $308.00 Now: $244.95 Add to Cart Compare Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view General Hydroponics | sku: GHTDS8 General Hydroponics 1500 PPM Calibration Solution 8 oz 1500 PPM Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $8.20 Now: $6.49 Add to Cart Compare Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view Bluelab | sku: BLPHMTR Bluelab pH Meter As the meter is portable and does not need a power supply to operate, it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements.It is easy to calibrate by using the push buttons on the meter and fresh Bluelab... MSRP: Now: $199.95 Add to Cart Compare Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected × OK
Quick view General Hydroponics | sku: GHPH4QT General Hydroponics pH 4.01 Calibration Solution Quart pH 4.01 Meter Calibration Solution General Hydroponics uses the highest quality reference solutions, allowing growers to calibrate many popular brands of pH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each... MSRP: $21.50 Now: $16.95 Add to Cart Compare Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected
Quick view Bluelab | sku: BLSOILPR Bluelab Soil pH Probe This non-refillable soil pH probe is used to measure the pH levels of soil or media of cropping, pasture, containerised plants, home gardens, propagation culture...anywhere that the soils pH requires testing.This probe can be used for direct pH... MSRP: Now: $104.95 Add to Cart Compare 1 2 Next 1 2 Next Compare Selected
