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...

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...

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...

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...

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...

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...

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...