General Hydroponics GH1552 PH 7 Calibration Solution for Gardening, 1-Quart lab-chemical-buffers, Green

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale. General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used.
General Hydroponics uses the highest quality electronic meter reference solutions
Growers can use our reference solutions widely among many popular brands of meters using the NaCl scale
General Hydroponics technicians check each batch to ensure that our solutions are exactly calibrated each time they are used