2. Touch the "ON/OFF" switch to turn on the power.
3. Put the electrode into the solution to be tested, shake it gently, and read the displayed value after the value is stable.
4. Touch the "HOLD" button to keep the current measured value. If you need to re-measure, press the "HOLD" button again to automatically release the hold status.
5. After use, press the switch, wash the electrode with distilled water, and put on the protective cover.
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Feature:
Compact and portable pen design,easy to operate and storage.
Large and clear LCD, easy to read and accurately measuring functions.
The tester is made of high quality electronic components to ensure high accuracy.
Suitable for water sources, aquariums, hydroponics, swimming pools and other water systems.
The resolution of ORP tester is 1 mv, very high sensitivity.
