product description:
Product Warranty and Customer Service:Feel free to contact us if you have any question, we provide 30 days money-back or resend for defective items.
Note: We only guarantee Handrong product, NOT responsible for others.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.
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.
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