General Hydroponics

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1500 ppm Calibration Solution 1 qt

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..

$21.50

1500 ppm Calibration Solution 8 oz

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..

$8.20

pH 4.01 Calibration Solution 1 qt

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..

$21.50

pH 4.01 Calibration Solution 8 oz

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..

$7.54

pH 7.0 Calibration Solution 1 qt

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..

$21.50

pH 7.0 Calibration Solution 8 oz

General Hydroponics uses the highest quality electronic meter reference solutions. Growers can use o..

$7.54

pH Control Kit

The pH Control Kit by General Hydroponics provides everything you need for testing the pH level of t..

$17.20

pH Test Indicator 8 oz

Fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the colora..

$10.76

pH Test Kit, 1 oz

General Hydroponics pH test kit. Contains pH test fluid and test strips...

$7.54