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For the accurate measurement and control of pH and E.C. To get the best out of plants growing in hydroponics systems you need to have the correct strength nutrient solution at the right pH.
pH adjustment. Phosphoric acid (pH down) and potassium hydroxide (pH up) these allow you to raise or lower the pH of your nutrient solution.
pH buffers, pH and E.C. Calibration and storage solutions for the maintenance of pH and E.C. Meters