Contact Us
Contact: Ms Judy Yan
Whatsapp/Wechat/Mob.: 86-18822802390
Email: marketing@gvdasz.com
Tel Phone: 86-755-27597356
Add: Room 610-612, Huachuangda Business Building, District 46, Cuizhu Road, Xin'an Street, Bao'an, Shenzhen
Mar 18, 2022
How to calibrate ph meter
1. Power the meter or by pressing the power button. The meter will begin displaying sound level readings
2. Hold the meter in hand facing the microphone toward the source of the sound to be measured.
3. View the measurement on the LCD
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