Feature 17 In 1 Function: This water quality tester adopts 7 in 1 design, which can measure PH, TDS, EC, ORP, S.G, salinity, temperature. 22 Salinity Measurements: This water quality tester can test the salinity of fresh water, and it can test the salinity of seawater. The food salinity measurement range is 0.00 to 25.00% and the sea water salinity measurement range is 10.1 to 200.0ppt. 3Automatic Temperature Compensated PH Meter: This water quality tester features an automatic temperature compensated PH meter that ensures you get the most accurate readings possible. 4Compact And Portable: This water quality tester is small in size and light in weight, which makes it very convenient to carry around and use. 5Wide Application: This water quality tester is perfect for home and laboratory pH testing applications including drinking water, swimming pools, ponds, beer brewing, kombucha, aquariums, hydroponics, laboratories, food processing, and more.Item Type: Water Quality TesterMaterial: ABSBattery: LR44 x 4 ( Shipped Without Battery )PH: 0.00-14.00pH, Accuracy: 0.01pHEC: 0-19900us/cm, 0-199.0 ms/cmTDS: 0-19900ppm, 0-199.0pptSALT: 0-199.0ppt, 0%-20S.G: 0.990-1.400Temp: 0C-50C (32F-122F) .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Water Quality Tester1 x Manual