Ratiometric Turbidity Meter, Infrared (LED) Lamp, Material: Plastic, 2020T version with tungsten bulb is best suited for low level drinking water applications
Ratiometric Turbidity Meter, Infrared (LED) Lamp, Material: Plastic, 2020i version best suited for natural waters, samples of higher turbidity and samples with some color
Temperature range is -30 to 130[degree]C. 0.3% accuracy. Chemically resistant. Measures conductivity, resisivity, and dissolved solids. With glass probe and 9V alkaline battery. For reagent-grade water for CAP, ASTM, NCCLS, ACS. NIST traceable.