Waterproof Exstik Ph/Orp Meter, With Flat Surface Electrode.
Designed for use with liquids, semisolids and solids. Change from pH to ORP measurements, and back, by simply switching tips. (And it floats!) Measures from 0.00 to 14.00 pH. Has highest pH pen resolution of 0.01 pH and accuracy of 0.01pH. Recognizes 4, 7, and 10 pH buffers. pH pen converts to mV mode by switching to an ORP module (range: -50 to 1000mV). Memory saves last calibrated values. Data Hold freezes current reading. Record/Recall up to 15 readings on large 3 1/2 digit LCD display. Protective cap used for storage solution to prolong the life of the sensor. Other features: Automatic Temperature Compensation for pH, Automatic Shut-Off and Low Battery Indication. Dimentions: 1.4 x 6.8 x 1.6" (35.6 x 172.7 x 40.6 mm). Weight: 3.85oz (110g). Complete with meter and flat surface electrode, four LR44 button batteries, neck strap and protective sensor cap.