7-in-1 pH Meter : Water quality tester has a seven-in-one function, which can measure TDS, EC, ORP, S.G, Salinity, and temperature with high precision at the same time. The measurement range is large and wide and can measure freshwater salinity and sea salt. All-round measurement of water quality to ensure healthy water quality. Automatic Calibration pH Tester: With high sensitive glass probe, you can get a full measurement range of 0-14pH, 0.01 pH resolution. And pH meter uses a 3-point calibration method, calibrating the electrode to solutions of pH 4.00, pH 6.86, and pH 9.18,You can calibrate effortlessly to ensure the accuracy of your measurements. High Accuracy Water Tester: High-accuracy algorithm chip and electrode of our digital water ph tester ensure accurate and fast response. Large Backlit LCD Design guarantees that you can read the measuring results in any condition.One-button lock reading function helps lock reading even if the PH Meter is taken out of the sample. Automatic Temperature Compensation (ATC) pH Meter Digital: No longer need to pay attention to the temperature of testing liquid, meter can accurately determine the pH value of the sample in the temperature range of 0 C-60 C (32 F-140 F), so as to solve the inaccurate problem caused by changing the liquid temperature. PH Tester with Wide Application: Pocket-sized and multi-functional, Ideal for household and laboratory pH testing applications, including drinking water, swimming pool, pond, beer brewing, kombucha, aquariums, hydroponics, laboratory, food processing, etc.