Colour:Yellow ✔SPECIFICATION: *Measuring Range: 0.00 -14.00 pH * Resolution: 0.01 pH *Accuracy: ±0.01 pH *Automatic temperature compensation: 0-80 ℃ (32-176 ℉) *Batteries: 2*1.5V ( LR44 Button cell include) *Backlight Time: 20 seconds ✔APPLICATION: Calibrate according to the instructions (the second photo or the second small point of the product description) . ✔OPERATION: 1. Remove the protective cap and protective film on the screen. 2. Rinse the electrode with distilled water, and suck it with filter paper. 3. Turn on the meter, immerse the pH meter electrode into the test solution.(can not be over the immersion line). 4. Stir gently and wait about 30s for the reading to stabilize. 5. Turn off the meter after use, clear the electrode with pure water and dry it with filter paper. ✔NOTE: *The glass electrode is fragile, treat it carefully. Don't touch it by hard tools or fingers. *Please do not immerse the meter into the solution over the "warning line", to avoid damage to the circuit board. *If the "cal'(calibration) button is pressed and electrode exposed to air for a long time,calibration is required. ✔PACKAGE INCLUDES: *1 x PH meter *3 x PH Calibration Powders *1 x Transparent box *2 x 1.5V LR44 batteries *1 x User manual in English
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