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General Hydroponics pH Test Indicator - 8 oz

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General Hydroponics pH Test Indicator, 8 oz Product Description This concentrated pH Test Indicator is simple to use and offers dependable results that are easy to read. Three drops of pH Test Indicator for every 5 milliliters of solution will determine the acidity or alkalinity of a plain water sample or nutrient solution; the resulting color of the sample corresponds to the pH chart included on the bottle. Shipping: All orders are shipped via Fedex or USPS. You will receive a tracking # via