Item Type: Digital Water Quality Meter Material: ABS Conductivity Test Range: 0 to 10000us/cm 10.01-19.99ms 20.1-400ms/cm Resolution: 1us/cm 0.1ms/cm Accuracy: 2 percent of Reading TDS Test Range: 0 to 10000ppm 10.1 to 200.0ppt Resolution: 1ppm, 0.1ppt Accuracy: 2 percent f.s of Reading Salinity Measurement Range: 0.01 percent to 25.00 percent Resolution: 0.01 percent Accuracy: 0.01-5.00 percent (0.1 percent ) 5.1-25.00 percent (1 percent )2 percent f.s PH Test Range: 0.00-14.00ph Resolution: 0.01PH, Accuracy: 0.05ph Temperature Compensation: Automatic Temperature Compensation (ATC) Working Environment: 0 to 60.0 (32.0-140), RH 100 percent Temperature Range: 0-60.0 32.0-140 Temperature Accuracy: 0.5 Temperature Resolution: 1/ Automatic Shutdown: 5 Minutes Battery: 3 x LR44 (not Included) Waterproof Grade: Ip67 Uses: Suitable for the Determination of Various Values of Water Quality in Drinking Water, Aquaculture, Swimming Pools, Etc. Weight: Approx. 140g / 4.9oz15 in 1: This water quality test pen can measure PH, salinity, temperature, TDS and EC, multifunctional. 2IP67 Waterproof: Using sophisticated production technology, IP67 waterproof, it can still be used after falling into the fish tank. 3Water Quality Meter: The multifunctional water quality tester is automatically calibrated, with replaceable probes, with backlit. 4Measurable Salinity: Measurable salinity (sea salt, freshwater salt). Sea Salt: The measurement range of sea water salinity is 10.1 200.0ppt. Light salt measurement range: 0.00 25.00 percent , accuracy: 0.01 5.00 percent 5.10 25.00 percent . 5Uses: It is suitable for the determination of various values of water quality in drinking water, aquaculture, swimming pools, etc. 1 xDigital Water Quality Meter 1 x User Manual 3 x Testing Powder