Ph Tester Digital Ph Meter Hofun Professional Ph Pen 0 | Desertcart Hong Kong
PH Tester Digital PH Meter, Hofun Professional PH Pen with 0.01 PH High Accuracy, 0-14 PH Measurement Range, Ideal Water PH Tester for Household Drinking, Pool and Aquarium(Yellow)
产品编号: 357998313
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What are the steps for calibration? I want to know how many steps are involved before I purchase one.
Tds meter does not hold reading. is it broke? i sent one back because i thought it was broke and the new one does the same thing.
What is the test range of the ph tester?
Is there amy way to calibrate it after long term of usage?
