1. Intelligent scoring function, four-color backlight on the screen, visually indicating 4 different levels of water quality 2. Can simultaneously measure COD, TOC, UV275, TDS, conductivity, temperature 6 water quality indicators, comprehensive evaluation of water quality 3. Designed according to international drinking water standards 4. The instrument has the function of ambient temperature compensation, and the data is stable, allowing long period calibration 5. The probe is waterproof, conforming to the waterproof class IP67 A wide range of applications, spring water, groundwater, tap water can be TOC, COD Measure the bacteria and microorganisms in the water to determine the water quality Applicable models, ultrafiltration, reverse osmosis, activated carbon are applicable Small error, abandon TDS single index, comprehensive assessment of water quality Specification Detection scope: tap water, purified water, bottled water, groundwater, surface water, pool water... Etc. Measuring range: COD (0-100mg/L), TOC (0-100mg/L), UV275 (0-1.0au/cm), TDS (0-2000ppm), conductivity (0-4000us/cm), temperature (0-50℃) Power Supply: 2X AAA battery (not included) Size: 157 x 37 x 14mm Color: White Material: abs Package Contents: 1X Digital Water Tester 1 x Chinese and English manual 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.