General Hydroponics® pH Test Kit with vial accessories will learn how water and

will learn how water and grain are transformed into the full range exquisite

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General Hydroponics® pH Test Kit with vial accessories will learn how water andGeneral 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 expensive electronic meters because of its reliability and ease of use, which are important factors when the health of a valuable crop is at stake. Use 3 drops per 5ml of solution.