This pH meter will supply you with fast and accurate readings from 0.00 to 14.00 pH with a resolution of 0.01 pH. An easy to read large LCD display and a simple to perform 2-point calibration. Fast, accurate and lightweight with a long battery life, ensures you don't have to worry about frequent battery replacements. The pH electrode can be replaced, simply unscrew the electrode from the meter body and screw on a new one.Comes with mini precision screw driver for adjustment trimmer.Please Note: Batteries Not Included. Requires LR44 Batteries (x 3)Specifications: Compact pH tester with narrow probe for use in small samples or test tubes Manual two-point calibration through trimmers for custom calibration Single-line LCD display screen for ease of viewing Replaceable electrode with screw connector to extend meter life Low power demand for extended battery life Model Number: PH-98103 Total Length: 6 7/8" Probe Diameter: 3/8" Includes: Instructions pH Meter Adjustment trimmer mini precision screw driver