INTRODUCTIONS:
1. Fix the PH sensor in the water gently.
2. Plug in and wait for approx.15 Min., the number indicating on the meter is the PH value of the water .

● Calibration Guide:

1.Dip the sensor into the PH 7.0 buffer solution.(25°C is the standard temperature for calibration) 

2.Stir gently and wait for the reading stable. Repeat it if necessary.

3.If the indicating number is not 7.0 please adjust the trimmer on the front panel of the meter with the attached screwdriver to PH 7.0.

NOTES:

1. The PH sensor consists of a sensitive glass sensor and combined with a silver/silver chloride sensor. The plastic body is light-proof and hard enough to avoid broken. The sensor should not be kept out of the water for a long time. If the PH sensor need to be taken away from the aquarium, the sensor should be stored in the original plastic bottle, which filled with KCL-solution.
2. Clean the glass bulb of  PH sensor regularly (every two or three months) to avoid  the impurities and lint brought into the water.
3. It can not be used in non-aqueous solution.

4.The glass bulb of the PH sensor should be soaked in a storage bottle filled with KCL-solution to keep it moist when the PH meter is not working.

◎ PH measuring range: 1- 9.9 PH  Temperature range: 5 - 60 °C