Multifunctional Digital 7 in 1 Water Quality Tester Portable High Accurancy Water Quality Test Pen Water Quality Measurement Tool

Easy to calibrate pH meter

1. Dissolve the PH buffer powder in 250ml of distilled water and stir until the powder dissolves.

2. Place the electrode in a pH 4.00/pH 6.86/pH 9.18 standard solution and wait for the reading to stabilize (usually 5-10 seconds);

3. Press and hold the MODE/CAL on while releasing it for 6 seconds; PH4.00/PH6.86/PH9.18 read stop flashing.

Notification:

1. The pH meter has been calibrated before leaving the factory, and there is no need to recalibrate it upon arrival!

2. The pH meter must be recalibrated in the following situations:

**Frequent use of special electrodes;

**Long term use after calibration;

**High measurement accuracy.

Supporting widely used pH meters

This digital pH meter water quality meter is suitable for aquariums, swimming pools, student laboratories, tap water, drinking water, and kitchens.

Attention:

1. Avoid impact, heavy pressure, and falling.

2. After replacing the battery, the instrument needs to be recalibrated.

3. Clean the electrodes with distilled water before and after each session.

4. Do not put the entire TDS instrument into water or exceed the immersion level.

Packaging content:

1 * Water quality meter

1 * Product manual