Water Quality Tester for Drinking Water Portable 9-in-1 TDS Meter Drinking Water Testers Measure COD/TOC / UV275 / EC/TDS/Salinity/Hardness/S.G/Temp for Water Purifier, Tap, Well, Seawater

["【9-in-1 Multi-Parameter Water Tester】Landtek 9 in 1 Water Quality Tester measures nine critical water quality parameters of COD, TOC, UV275, TDS, electrical conductivity (EC), salinity (SAL), general hardness (GH), specific gravity (S.G.), and temperature, giving users a complete water analysis in a single device","【Water Quality Tester with Smart Color-Coded Scoring Display 】This water quality tester for water purifier features a water quality rating function, divided into 4 levels: blue (Excellent), green (Good), yellow (Average), or red (Poor) backlight colors respectively, making it extremely easy to assess water quality. Particularly suitable for testing houeshold drinking water for children's healthy growth and pregnant women's safety","【 Built-in Temperature Compensation for Accurate Measurement】The digital water tester features one-button operation, a high-sensitivity probe, and built-in temperature compensation (0–50°C working range) to ensure stable, repeatable measurements even when water temperature fluctuates, guaranteeing consistent and reliable measurements regardless of external condition","【Quick Calibration】No need for calibration powder. Simply place the drinking water testers in distilled or pure water, select the calibration button, and wait for 3 seconds to complete calibration. (Do not use mineral water or natural drinking water for calibration)","【Measure on-the-go】Equipped with 2 AAA batteries(included), compact in size (157 x 37 x 14mm), this water quality tester for drinking water is easy to carry, allowing for quick and accurate testing of the water quality of tap water, purified and bottled water, groundwater, surface water (non-sewage), seawater, and aquaculture","【Note】If this portable water quality tester to be used for experiments, it should be calibrated weekly; For daily home or outdoor travel use, calibration is not required weekly, calibration with distilled water is sufficient after a period of use"]