Fangrui Product Details Fangrui Product Details [5-in-1 Ph Meter] - Meter Has A Five-in-one Function, Which Can Measure Ph, Tds, Ec (electrical Conductivity), Salinity %, Salinity Ppm, And Temperature - With High Precision Every Time. All-round Measurement Of Water Quality To Consistent Results. [accurate Ph Tester] - Featuring A Solid Probe, You Can Get A Full Measurement Range Of 0-14ph, 0.01 Ph Resolution. The Ph Meter Uses A 3-point Calibration For Maximum Accuracy, And Includes Extra Calibration Powder. [tds Measurement] - Fast And Accurate Tds / Ppm Testing For Hydroponics Or Anywhere Tds Is Critical. The Tds Range Is 0~10,000ppm. Accuracy Is . [ec Measurement] - Measure Electrical Conductivity Of Either Fresh Or Salt Water. [saline % And Saline Ppm Measurement] - Conveniently And Easily Keep Track Of Saline Levels By Either Percentage Or Ppm. Great For Aquarium, Saltwater Pools, Saltwater Spas Or Anywhere Salt Levels Are Critical. [temperature Compensation] - The Ph Meter Auto-calibrates To The Sample Liquid Temperature, Which Guarantees Ac