CoZroom 0.1pH High Accuracy Pocket Size pH Meter with ATC and Backlit LCD, 0-14 pH Measurement Range, 0.1 Resolution Handheld, Measure Household Drinking Water(Yellow) Great for home and laboratory pH testing applications including aquariums, swimming pools, and tap water. Large LCD screen, glass probe, 0.1pH readout accuracy, 0.1 resolution with this ph meter Water quality meter lightweight with a great handle design so you will be able to use it easily. Full measure range of pH 0-14, 0.1pH highly accuracy; reliable and quick reading. The electrode can be used in different positions and remain accurate for a long time without recalibration.