Economical Waterproof pH Pen Saves You Money
Waterproof pH Pen With Temperature has auto buffer recognition. Fits right in your pocket. Three-point calibration with a single key couldn’t be easier. Data-hold feature freezes displayed readings. Low-battery indicator with auto shutoff saves your battery but can also be disabled. Pen has ATC and also displays pH and temperature readings simultaneously. Comes with a sensor cap, inner pH electrode protection cap and four LR44 button batteries. Electrode is not replaceable.