pH 4.01 Standard Reference Solution - 1 qt.
pH Calibration Solution - General Hydroponics GH1542
|MPN (Part No.):||GH1542|
Having the correct pH level could be the difference between wonderful and wilting plants. General Hydroponics' 1 quart pH 4.01 Standard Reference Solution is just the thing to keep your electronic pH meters accurate and your garden blooming and beautiful.
- Compatible with many popular brands of meters using NaCl scale
- Each batch checked for precise calibration
- pH meters only