Model: 2019 updated Version Measuring Range: 0-14.0 pH Resolution: 0.1 pH Accuracy: ±0.1 pH（20°C ) Use Environment: RH 95%, 0-50â"ƒï¼ˆ32～176â"‰ ) Battery: 2Ã-1.5V LR button cell Weight: 1.76 OZ High Quality and Durable It's highly accurate for measuring range of 0-14 PH, 0.1 PH resolution, measure & display pH result simultaneously with LCD display, reliable and quick reading. Easy to Use You just remove the protective cap and immerse the PH meter electrode in the solution and turn on the PH by ""ON / OFF"" switch to be measured. Beats the heck out of trying to see the colors of a litmus strip.Easy to Calibrate You can simply follow the instruction on the provided packet of solution 4.01 or 6.86, immerse the PH tester in the solution until numbers get stable. Note: 1.Clean the electrode with distilled water every time before and after use. 2. Be careful with the glass probe since it may be a little fragile when you use. 3. Remember to gently wipe it with a clean, soft cloth when you're done before capping it again. 4. Open the battery case or replace battery, then need to re-calibrate the meter.  Package Including1 x PH Meter
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