Review on π Hofun 4-in-1 Water Quality Tester - Upgraded PH Meter, TDS Meter and Temperature Tester with Backlight, High Precision Digital Water Tester for Household Drinking, Pool, Aquarium and More by Elizabeth Oliva
Non-repeatable results
The product does not hold the calibration. Box opened, calibration procedure carried out with switched-on buffer voltage. I checked the readings of the device on tap water and it turned out to be 9.6! All solutions since have returned readings of 9.6. Couldn't even use the meter. Removed battery, serviced, installed battery and calibrated again only to get the same result. In short, crap I wasted my time with this POS
- I have no particular complaints about it, everything is fine
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