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WebbpH is a measure of the hydrogen ion activity in a solution. Pure water that contains an equal balance of positive hydrogen ions (H+) and negative hydroxide ions (OH-) has a neutral pH. Solutions with a higher concentration of hydrogen ions (H+) than pure water are acidic and have a pH less than 7. WebbPH Meter, Preciva Digital PH Meter with Large Backlit LCD Screen 0,00-14,00 PH Measuring Range Water Tester for ... out of 5 stars (3,262) $22.99 $ 22. 99. FREE delivery Fri, Apr 14 on your first order. Or fastest delivery Tomorrow, Apr 11 . More buying choices $16.76 (6 used & new offers) PH Meter Digital Water Quality Tester, Testing Range 0. ... WebbChlorine NZ Suppliers. Find where to buy products from suppliers in NZ, including: distributors, ... the HI83308 doubles as a professional pH meter with its digital pH/temperature electrode input. Now one meter can be used for both photometric and pH measurements. Categories: Laboratory The Hanna Range, Photometers Reagents … how do i know my netgear extender is working