The Extech Waterproof Stick Type pH Electrode for Palm pH 6012WS comes in a rugged, polycarbonate construction with a special 4-wire waterproof connector that features a glass pH sensing bulb surrounded by protective teeth. There is built-in automatic temperature compensation via the Pt-100 sensor. The 6012ws has a pH range of 0 to 14pH and an operating temperature from 0 to 80 degrees Celsius.
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