If you have a swimming pool, aquarium or spa, you will need to conduct a pH test regularly. Wide range of applications-ideal for testing the pH balance of drinking water, swimming pools, aquariums, RO systems, spas or hydroponics.
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Step 2: Add 250ml of deionized water (or distilled water) to the beaker. Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual item.
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Press and hold the "CAL" button for 5 seconds. Rinse the electrode with clean water and dry. When the value starts to flash, press the "MODE/CAL" button (if the flashing value is greater than 222mV) or the "HOLD/TEMP" button (if the flashing value is less than 222mV).
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Step 2: Add 250ml of deionized water (or distilled water) to the beaker. Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual item.
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Press and hold the "CAL" button for 5 seconds. Rinse the electrode with clean water and dry. When the value starts to flash, press the "MODE/CAL" button (if the flashing value is greater than 222mV) or the "HOLD/TEMP" button (if the flashing value is less than 222mV).
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Press and hold the "CAL" button for 5 seconds. Rinse the electrode with clean water and dry. Press the "MODE/CAL" button to set the ORP mode; the word "mV" will be displayed in the upper right corner of the screen.
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Rinse the electrode with clean water and dry. Press and hold the "CAL" button for 5 seconds. Press the "MODE/CAL" button to set the ORP mode; the word "mV" will be displayed in the upper right corner of the screen.
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