Water Quality Tester Drink Water TDS Meter

YIERYI High Precision PH METER 0.00-14.00PH 3 Points Automatic Calibration for Drinking Water Laboratory Aquaculture Agricultural Irrigation Aquariums Swimming Pools

Use for ：

1. Drinking Water
2. Laboratory
3. Aquaculture
4. Agricultural Irrigation
5. Aquariums
6. Swimming
7. Pools

Calibration Examples：

1. Calibration with ph 6.86 solution：pressing“cal" about 5 seconds,release the buttonuntil the screen displays“6.86"and flashing.theph tester will be calibrated to ph 6.86.
2. Calibration with ph 4.01 solution：pressing“CAL" about 5 seconds,release the buttonuntil the screen displays“4.01"and flashing.theph tester will be calibrated to ph 4.01.
3. Calibration with ph 9.18 solution：pressing“CAL" about 5 seconds,release the buttonuntil the screen displays“9.18"and flashing.theph tester will be calibrated to ph 9.18.