This pH meter the perfect device for your testing of the acidity or alkalinity of liquids. It is very easy to use - just immerse the electrode to get accurate, fast readings. Full measurement range of pH 0-14, 0.1 pH range of error; reliable and quick readings. The smallest and lightest meter available on the market. Great for all home and laboratory testing applications including aquariums, swimming pools. Comes with carrying case; lightweight, handheld design for portability and convenience.