Review on ๐ก๏ธ VIVOSUN PH Meter Digital Tester Pen: Accurate 0.01 Water Quality Measurement Range for Household, Pool, Aquarium & More - ATC, White by Sherri Evans
Unreliable in testing, measuring and verifying
Right out of the box I was skeptical about the accuracy and arguing about the calibration but abandoned it as it is brand new. He gave me a reading that was constant for about a week, then he went to Possum and showed me a reading that starts at about 2.0pH to 0 and 16.00 when you turn it on. Switch off for a while to come back and get regular readings again. ๐คท
- GOLS certified
- Something is wrong
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