The Apera Instruments pH700 benchtop pH meter provides quick and stable pH readings for basic laboratory testing and educational purposes at an outstanding cost-effectiveness. Reliable measurement: with its quality 3-in-1 combination pH electrode and the advanced digital processing technology, the measuring of pH and temperature is quick, accurate and stable (accuracy: ±0.01 pH, range: 0 to 14.00 pH). splash-proof and dust-proof structure design, ideal for use in harsh environment. Intelligent functions: quick& easy auto calibration: automatically recognizes 6 types of pH standard solutions. 0 to 100˚c auto temperature compensation. 50 groups of data storage. Max/min measuring mode available, alternately displaying the maximum and minimum readings. Comes with an easy-to-install electrode holder and 3 bottles of premixed pH calibration solutions (4.00, 7.00, 10.01). the product is CE certified and comes with a two-year warranty for the meter; 6 months for the electrode. Model PH700 pH Measuring Range (0 to 14.00) pH Resolution 0.1/0.01 pH Accuracy ±0.01 pH ±1 digit Stability ±0.01 pH/3h ±1 digit Temperature Compensation (0 to 100)˚C (32 to 212˚F) Auto or Manual Calibration 1 to 3 points auto calibration mV Measuring Range ±1999 mV Resolution 1 mV Accuracy ±0.1% F.S ±1 digit Temperature Measuring Range 0 to 100.0 ˚C (32.0 to 212 °F) Resolution 0.1˚C; 0.1/1°F Accuracy ±0.5˚C±1 digit Others Data Storage 50 groups Storage Content Numbering, measurements, unit, temperature, and status of temperature compensation Power Supply DC9V/300mA IP Rating IP54 splash-proof and dust-proof Dimensions and Weight (9.5×9.3×4) inches / 2.2 pounds; With case: (12*10*5) inches / 3 pounds