The Extech Waterproof ExStik pH Meter PH100 comes with a built-in smart chip that offers advanced functions and features to a stick style pH meter not found anywhere else. The RENEW feature tells you when it is time to replace your pH electrode. The CAL feature tells you when it is time to recalibrate your meter. The PH100 includes a flat surface pH electrode that is completely waterproof and rugged enough to withstand harsh environments. The analog bar-graph originates at neutral point (pH 7.00) to conveniently view trends in acidity or alkalinity. The ATC plus measures temperature and the PH100 can have a 1, 2, or 3 point calibration.
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