Feature:1. APPLICATION: The penetration type PH detector is mainly used for the measurement of semi solids substances in food production and process, such as fruit (sauce), gel, paste, bread, and some meat, etc.2. STABLE MEASUREMENT: High accuracy, stable work, reliable, easy to carry, allows you to easily put in your pocket and measure anytime, anywhere3. PROFESSIONAL DESIGN: The PH tester has novel and beautiful design, and the design is more professional, can measure PH value and temperature4. CLEAR DISPLAY: This PH tester has large LCD screen display, which has the accurate measurement and clear display results5. BASIC SPECIFICATIONS: The measurement range is 0.00~14.00PH, the basic error of PH measurement is ±0.05PH, and the measurement stability is ±0.03How to Use:Open the battery cover and insert the battery correctly. Before using, if the detection electrode has been replaced, must be calibrated before measuring the pH value of the solution. The electrode can be used after calibration, does not need to be calibrated before each use. Generally, when the measurement interval is relatively short, can be calibrated once a monthSpecification:Item Type: PH Tester PenModel: PH818MMaterial: ABSBattery: 1.5V AAA x 2 (Not Included)Application: This piercing PH detector is mainly used for the measurement of semi solids substances in food production and process, such as fruit (sauce), gels, paste, bread, and some meat, etc.PH Measurement Range: 0.00~14.00PHPH Measurement Basic Error: ±0.05PHMeasurement Stability: ±0.03