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 quality of your household water and maintain healthy drinking water. 3-in-1 Design: Offers 3-in-1 functionality, 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 water, making it a useful tool for home water quality testing. Automatic calibration: The drinking water quality tester features an automatic calibration function that adjusts according to water temperature and quality, completing calibration within 1–3 seconds. Widely applicable: This PPM meter can be used for various water quality tests, including drinking water, swimming pool water, tap water, and well water. The water purity tester can not only assess water purity but also help monitor when to replace reverse osmosis filters. It can also be used to check the TDS (total dissolved solids) and EC (electrical conductivity) levels in swimming pools and aquariums. Color: As shown Material: Aluminum alloy + plastic Package Contents: 2 x Water quality tester Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement allowed error is +/- 1–3 cm.