Feature 1TDS, temperature, numerical value PPM/PPT can be measured at the same time for water quality. 2There are matte lids and function keys,which is nonslip and comfortable to hold. 3Equipped with PPT/PPM conversion button, you can choose the measurement unit according to the actual situation. 4The water quality tester has a backlight display, easy to read, does not affect its use in the dark. 5Suitable for measuring drinking water, hydroponics, aquariums, swimming pools, laboratories, etc.Item Type: Water Quality TesterMaterial: PlasticWeight: Approx. 447g / 15.8oz Range: Temperature: 0~100TDS: low: 0-1999ppmhi: 0 ~19.99PPTResolution:Temperature: 0.1TDS low: 1PPMhi: 0.01pptAccuracy: temperature 0.5C, TDS: 2%f.s.Temperature Compensation: 0C ~ 50CWorking Temperature: 0C ~ 50CBattery Voltage: 9V Model: 6f22 Capacity: 1300mah (built-in battery included)Usage Scenarios: suitable for measuring drinking water, hydroponics, aquariums, swimming pools, laboratories, etc.How to Use:1. Insert the measuring probe into the instrument.2. Insert the power connector.3. Put the monitoring head into the liquid to be monitored.4. The value can be displayed. .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 Tester2 x Probe1 x Manual1 x Screwdriver