Help keep your system clean, buffered and growing.
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).
GH technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used.
The General Hydroponics pH Calibration Solutions is the yin, to your yang. You've found what you're looking for.
Inventory Last Updated: Mar 22, 2023
Inventory Last Updated: Mar 22, 2023
