General Hydroponics Ph Control Kit

General Hydroponics pH Control Kit contains everything you need to measure pH levels of your hydroponic grow reservoirs, RELIABLE RESULTS: The streamlined testing system delivers fast, accurate, and easy-to read results every time, ALL-IN-ONE KIT: Includes 8 oz. General Hydroponics pH Up Liquid, 8 oz. General Hydroponics pH Down Liquid, 1 oz. Test Indicator, test tube, an eyedropper, and a pH level chart, THE PREFERRED WAY OF TESTING pH: Seasoned growers prefer our pH Test Kit to expensive electronic meters because of its reliability and ease-of- use, EASY TO USE: To use, simply fill a test tube halfway with nutrients, add a few drops of pH test indicator, and observe the coloration of the liquid; recommended pH for most plants is 5. 5 to 6. 5.