TDS water meter is a professional water level tester with simple operation, fashionable appearance and small volume.2. It is very suitable for all water quality testing, water purification applications, wastewater regulation, aquaculture, hydroponics, laboratory and scientific testing, pool, ecological testing, colloidal silver, water treatment, etc.Specifications:Measurement range: conductivity: 0-9990 μ s / cmTDS:0-9999ppmTemperature range: 0.1-80.0? (32.0-176.0℉)Accuracy: ± 2%Material: ABSSize: 154*30*14mm/6.06*1.18*0.55