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Auto buffer recognition is just one feature of the Extech Waterproof Pen. Three-point calibration with a single key couldn't be easier. Data-hold feature freezes displayed readings. Low-battery indicator with auto shut-off saves your battery, but can also be disabled. No. 143497 adds ATC and displays pH and temperature readings simultaneously. Waterproof pH Pens come with a sensor cap, inner pH electrode protection cap and four LR44 button batteries. Electrode is NOT replaceable.
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CAGE Code: 3ZEL7 | DUNS: 18-854-1176
Reference Number: WB0000