This item cannot be shipped to the following state(s): GU,PR,VI
For nearly 85 years General Tools has grown to become the recognized industry leader for specialty hand tools and instruments. The WK2017SD is a general purpose handheld instrument capable of measuring the pH, oxidation-reduction potential (ORP) or conductivity of a solution, as well as its TDS (total dissolved solids), DO (dissolved oxygen) or salt content. Using an included conductivity/TDS/salt probe, an optional DO probe, and optional ORP and pH electrodes, the meter can measure pH from 0 to 14, ORP from -1999 mV to +1999 mV, conductivity up to 200 mS (milliSiemens), TDS up to 132,000 ppm, DO up to 20 mg/L, and salt content up to 12% by weight. The meter also accepts an optional automatic temperature compensation (ATC) probe that configures a pH electrode to measure solutions at temperatures between 32 degrees and 150 degrees Fahrenheit. (0 degrees and 65 degrees Celsius). For measuring the pH of solutions at temperatures between 32 degrees and 212 degrees Fahrenheit (0º and 100ºC), the temperature compensation can be set manually. pH electrodes must be calibrated for pH 4, pH 7 and pH 10 using buffer solutions, as do conductivity/TDS/salt probes and oxygen probes using their own standard solutions.