The EC850 Portable EC/TDS Meter from Apera Instruments is a field-ready portable conductivity and TDS meter built for professionals who demand accuracy. Featuring a proprietary platinum black conductivity electrode, just like the 2401T-S Glass-body Conductivity Electrode, it delivers ±1% full-scale accuracy across an ultra-wide range of 0 to 200 mS/cm, with a one-tap switch between conductivity and TDS readings. Up to 3-point auto-calibration is quick and effortless, with built-in self-diagnosis to guide users through common issues. Customizable parameters, including cell constant, TDS conversion factor, and temperature compensation, ensure adaptability across diverse applications. The large LCD simultaneously displays readings and temperature, while an IP57 water-resistant housing and protective rubber sleeve withstand harsh environments. A foldable stand doubles as a benchtop meter when needed, and the included carrying case makes field transport hassle-free.