The water quality tester is equipped with a high-quality aluminum alloy probe to quickly and accurately test the total dissolved solids (TDS) of water With a water tester, you can quickly test the TDS value to help you understand the turbidity of your household water and keep your drinking water healthy. 3-in-1 Design: has 3-in-1 function, capable of measuring TDS (Total Dissolved Solids), EC (Electrical Conductivity) and temperature With just one water quality tester, you can easily monitor multiple important parameters in the water, making it a good helper compatible home water quality testing. Automatic calibration: The drinking water quality tester has an automatic calibration function, which can adjust according to the water temperature and water quality, and complete the calibration within 1-3 seconds Widely Applicable: This PPM meter can be widely used compatible various water quality tests, including drinking water, swimming pool water, tap water and well water. The water purity tester can not only test the purity of water, but also help you monitor when to replace the reverse osmosis filter, and can be used to check the TDS (total dissolved solids) and EC (electrical conductivity) of swimming pools and aquariums Colour:As Shown Material:Aluminum alloy + plastic Package Contents: 2 x Water quality tester Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.