Pocket-Sized Units Are Economical and Easy to Use
Auto buffer recognition. 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.