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Specification:Shell material: ABSPower supply: 3 X LR44 button batteries (not included)Size: 183x37mm/7.2×1.46inUses: Suitable for water quality monitoring, such as farmland irrigation, aquaculture, laboratories, etc.

Operation guide:

Before use, please pull out the electrode protective cover under the test pen, just pull it out directly, do not rotate!1. Determination of hydrogen content Take the hydrogen-rich test pen out of the box and press the ON/OFF button to turn it on. After the value displayed on the screen is “0”, put the instrument into the water to be tested for testing2. ppb/ppm conversion1. The default measurement unit of the instrument is ppb2. In the power-on state, click the “FUN” button to switch the measurement mode between ppb and ppm. (1ppm = 1000ppb)3. Automatic Temperature Compensation (ATC)There is an ATC symbol in the lower left corner of the display, indicating that the instrument is in automatic temperature compensation mode.4. Lock function When the test pen is working normally, pressing the “HOLD” key will lock the current data on the display screen, and the HOLD symbol will appear on the display screen. Press the “HOLD” key again to release the lock mode, and the HOLD symbol will disappear.5. Over-range display When the hydrogen rich measurement value is greater than 2400 ppb (2.400ppm), the display area will show the overrange symbol: “- – -“.When the temperature is lower than 0℃ or higher than 50℃, the temperature display area will display: symbol “L” and symbol “H”.6. Low voltage prompt When the display is dim and the battery symbol appears on the upper part of the display, it means that the battery voltage is insufficient, please replace the new battery as soon as possible, and do not mix the old and new batteries.

Maintenance:

Even under normal use, there will be attachments or other dirt on the electrode sensor, which will affect the contact area between the electrode sensor and water, thereby affecting the test sensitivity and accuracy.Before use, please use a cotton swab dipped in a little toothpaste to clean it, and then wipe the sensor pad with a paper towel dipped in water. Keep the electrode surface clean and bright before testing.After each use, please wash the electrode with clean water, dry the water on the electrode with absorbent paper, cover the electrode protective cover, and place it in a cool and ventilated place.

Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual