PH/Conductivity/TDS/Salinity Meter - (WQ120)The Triplett Model WQ120 waterproof (IP57) PH TDS Conductivity Salinity Pen combines a flat surface pH electrode with a multi range conductivity cell to measure pH, TDS, Conductivity, Salinity and Temperature. The flat surface electrode for pH can measure solids, semi solids, and liquids. Read More > DESCRIPTION The Triplett Model WQ120 waterproof (IP57) PH TDS Conductivity Salinity Pen combines a flat surface pH electrode with a multi range
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