Hanna PH Meter HI 96107. This is a pH meter by Hanna Instruments, the pioneers of laboratory instruments. A pH meter, also called a sensor or tester, is a device used to measure the alkalinity of a substance with a single-line LCD screen, a replaceable electrode, and a low power demand. A pH meter used to measure the pH of substance such as water, food, beer, or wine in laboratory, industrial, and food applications. The single-line LCD screen of this meter shows the current measurement. The meter has manual temperature compensation and manual one-point calibration through a trimmer on the top. Three 1.5V button batteries provide approximately 700 hours of use. The meter also comes with a calibration screwdriver and instructions. PRODUCT FEATURES: Compact pH tester used in laboratory and industrial applications Manual one-point calibration through trimmers for custom calibration Single-line LED screen for ease of viewing Protective cap keeps sensor moist when stored upright Low power demand for extended battery life SPECIFICATIONS: Range: 0.0 to 14.0 pH Resolution: 0.1 pH Accuracy: ±0.1 pH Calibration: manual, 1 point Environment: 0 to 50°C / 32 to 122°F; max RH 95% Battery Type: 3 x 1.5V, alkaline (included) Battery Life: approx. 700 hours of continuous use Dimensions: 150 x 30 x 24 mm Weight: 85 g without case HOW TO USE: 1. Remove the protective cap. 2. First rinse the electrode with distilled water, and suck it with filter paper. 3. Turn the meter on by pressing the “ON” key. 4. Immerse the ph meter electrode in the solution to be tested (cannot be over the immersion line). 5. Stir gently and wait around 30 seconds till the reading stabilized. 6. After finished, clear the electrode with pure water, turn the meter off by pressing the “ON / OFF” key. 7. Always replace the protective cap after use. PACKAGE: 1 x pH tester 1 x Care Box 1 x Protective cap 1 x Calibration screwdriver 3 x 1.5V Button Batteries (already put inside the meter) 1 x English Manual