Specifications: 1. Measure range: 0-14.00pH 2. Resolution: 0.1PH 3. Accuracy: ±0.1PH（25℃） 4. Power supply: 3X1.5V (AG13 button battery) 5. Operating temperature: 32℉--122℉ (0℃ to 50℃) 6. Dimension: 5.59 inch* 1.14 inch* 0.59 inch 7. Weight: 51g ( The total weight is 120g including accessoies). Operation Steps: 1. Remove the protective cover. 2. Clean the electrode with water (there is white crystalline salt around the electrode cap. It is a normal phenomenon of the pH electrode. As long as the electrode is immersed in water, it dissolves and disappears). 3. Turn on the switch. Insert the pH meter into the measured liquid until the liquid is submerged to a slight immersion, allowing the solution to soak slightly above the immersion line 4. Gently stir until the displayed value is stable, then read the displayed value. PH meter calibration: 1, Add 250ml water to one pack of 6.86 correction powder. And shake gently. Put tester to solution, it is accurate if the tester shows 6.8 value. 2, If the displayed value is deviated from 6.8, please use a small screwdriver to adjust the calibration potentiometer (behind the hole). Please do not leave the water when correcting the tester. Precautions: The pH meter must be recalibrated in the following cases: 1. Has been used (or placed) for a long time after calibration 2. Particularly frequent electrode use. 3. High Measurement accuracy. Package Contents: 1 x pH Meter 2 x pH Buffer Powder (for calibration) 1 x Calibration screwdriver 1 x User Manual 1 x Package Box
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