General Hydroponics PH 4.01 Calibration Solution for Gardening, 1-Quart

Only the highest quality reference solutions are used by General Hydroponics. This allows growers to calibrate many popular brands of pH meters. Our calibration solutions are batch tested at our lab to ensure they are precisely calibrated. This solution is to be used with a pH meter that calibrates at 4.01. Calibrate with confidence when using our products. We guarantee that our products are accurate!

Superb buffer solution at a great price Highest quality solution to ensure proper calibration A must have for pH meters Ensures accuracy with your equipment Another great item from Hydroponics Market