pH Test Kits

  • pH Control Kit w/ Up & Down

    General Hydroponics pH Control Kit makes pH testing easy. This package includes a GH pH Test Kit, a GH 8oz bottle of Liquid pH Up and a GH 8oz bottle of Liquid pH Down. Simply fill the included test-tube halfway with nutrient, add a few drops of pH Test...

    $17.95
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  • pH Test Kit for Liquid

    General Hydroponics pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator, and observe the coloration of the liquid in the test vial. Use 3 drops per 5mL of solution. This kit has a pH test...

    $7.95
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  • pH Test Kit for Soil

    Rapitest pH Test Kits make pH testing of soil easy. Simply fill a test indicator with a little soil and water, add one green pH test capsule and shake. Then observe the coloration of the liquid in the test indicator versus the included color chart. This...

    $5.95
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  • Bluelab Grower's Toolbox - Limited Edition

    The Bluelab Grower’s Toolbox combines the essential tools to easily manage crops by measuring the pH, conductivity (ppm) and temperature of the nutrient solution. Learn the hydroponics basics with the Grow Book. Keep growing with the ultimate handy...

    $189.95
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  • Soil Test Kit for N/P/K/pH

    Rapitest Soil Test Kits make Nitrogen, Phosphorus, Potassium and pH testing of soil easy. Simply fill a test indicator with a little soil and water, add one test capsule and shake. Then observe the coloration of the liquid in the test indicator versus...

    $16.95
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  • Bluelab pH/TDS Probe Care Kit

    The instrument is only as accurate as the probe is clean. Probe cleaning is one of the most important parts of owning or operating any Bluelab meter, monitor or controller. The probe surface is where the instrument takes the reading of the solution. If...

    $22.95
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  • General Hydroponics® pH Test Kit 8oz

    General Hydroponics® pH Test Kits make pH testing easy. Simply fill a test-tube halfway with nutrient, add a few drops of pH Test Indicator and observe the coloration of the liquid in the test vial. Many experienced growers prefer our pH Test Kit to...

    $12.95
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