Salinity + TDS + EC + pH + S.G. + ORP + Temperature are combined perfectly in one meter. This facilitates your different water quality testing needs and saves you time and money, Ideal for drinking water, swimming pools, aquariums, hydroponics, kombucha brewing, spa pools, and laboratory use. totally a helpful water test kit for your water quality safety. pH Tester with high sensitive glass probe, you can get a full measurement range of 0-14pH (0.01 Precision). Pre-calibrated ORP plus three-point calibration Includes 3 pH calibration powders (4.00, 6.86, 9.18) reliability. Achieve precise water quality results easily or in professional environments. Pool salinity tester no longer need to pay attention to the temperature of testing liquid, salt pool tester can accurately determine the results of the sample in the temperature range of 32F-140F(0C-60C), so as to solve the inaccurate problem caused by changing the liquid temperature. ORP meter can accurately assess the oxidation of water, It plays a crucial role in aquarium, drinking water quality test, swimming pools quality monitor, which can have a major impact on pool health and The ORP value is a measure of the oxidative power or strength in water pool salt. digital ppm meter is equipped with premium quality titanium alloy probe, which enables quick and accurate water quality test. Our water quality tester is with 0-9999ppm wide test range ensures different function of usage. Color: As Shown Material: plastic Package Contents: 1set * digital pool tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.