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Using Steps:

1.Remove the protective cap;

2.Turn the meter on by pressing the"ON/OFF" key;

3. Immerse the meter electrode in the test solution

( immersion depth can not be over the immersion line);

4.Stir gently and wait until the reading stabilized.;

5.if you need test temp , please long press

"HOLD/TEMP"button to get temp reading:

6.After finished ,clean the electrode with distilled water ,

turn the meter off by pressing the"ON/OFF" key;

7. Replace the protective cap after use.

How to Perform pH Calibration:

1. Pour 6.86, 4.01, 9.18 standard buffer solutions and distilled water into separate clean cups.

2. In order to calibrate accurately, for each buffer solution, use two cups to separate, one cup with water for rinsing the electrode, and the other solution for calibration.

3. Touch the “ON/OFF” button to turn on the power.

4. Put the electrode into the PH6.86 standard solution and shake it gently until the value stabilizes.

5. Press the “CAL” key for about 5 seconds to release, the instrument enters the automatic calibration state, the value begins to jump until the display value and the standard buffer solution at the temperature of the PH value of the same, that is, to complete the PH6.86 calibration.

6. Clean the electrode and wipe it dry, put the electrode into the PH4.01 standard buffer solution and shake it gently until the value stabilizes.

7. PH4.01 and PH9.18 measurement method is the same as measuring PH6.86 standard buffer solvent.

8. It is best to calibrate in the order of 6.86, 4.01, 9.18.

Warm Tips:

Before use, the probe should be soaked in water for two minutes, activate the probe before use or calibration

1.Recalibration is required in the following conditions:

- Lengthy periods of inactivity - Very frequently use.

- The testing accuracy requirement is very high.

-The "cal"(calibration) button was pushed and electrode exposed to air for extended period of time.

2.If you calibrated the meter in the air or in wrong calibration solution,there will flash"ERR"on the screen.

3.When the tester is on, the value is jumping in the air, which is a normal phenomenon.

4.The product is modular design, if the probe is damaged, you can buy the probe for replacement.

5.Please recalibrate the device after replacing probe.

6.Always replace protective cap after using digital meter to keep electrode from drying out due to prolonged exposure to air, which leads to slow or unstable readings.

7.If electrode has been dried out , immerse it into distilled water for a few hours.

8.You can press the HOLD and MODE Buttons for 3 seconds at the same time to reset it,when the date is abnormal.