The Oakton® CTS EcoTestr TDS offers all-in-one measurement of conductivity, TDS and salinity in one meter. TDS reading ranges from 0 to 20 ppt with a resolution of 10 ppm up to 2 ppt, and 0.1 ppt over 2 ppt. The expanded four-digit dual-line display shows conductivity and temperature readings simultaneously. The improved, leakproof cap design functions as a sample cup and as a stabilizing base to stand the meter upright. The waterproof housing floats, and is compatible with lanyards. Features include automatic temperature compensation and single-point calibration. One-year warranty.