TDS Digital Water Quality Tester TDS Meter Water Test Pen For Water Detection Features: 1. Can sense the current fluctuation of millimicron level so as to instantly and accurately measure the current value of the measurement data is automatically locked, no need to always put the water observation. 2. Alloy electrode probe, fast detection speed, sensitive response, more accurate conduction. 3. Before drinking a test, drinking water at ease, TDS on behalf of the total soluble solids content in the water, the lower the TDS value / the purer the water quality. 4. Meet the needs of different scenarios testing, such as daily drinking water, swimming pool, aquaculture water quality, agricultural water, daily water, water quality testing. Specification: Measuring range: 0-9990ppm Working environment: 0C-60C Product Battery: 2*1.5V (button battery) Product probe: alloy probe Product size: 140*24*14.5mm Package Included: 1*TDS water quality detector Note: 1. Please allow 1-3 mm error due to manual measurement. Please make sure you don't mind before ordering. 2. Please allow 1-3g weight error. Please make sure you don't mind before ordering. 3. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you!