Review on ๐ Accurate Water Quality Testing with KETOTEK 2-in-1 PH and TDS Test Meter: Hydroponics, Aquariums, Drinking Water, RO System, Fishponds, and Pools by Simone Black
PH meter not working / TDS meter working fine
I read the instructions and tested the solution which should be around 5-6 ph. The meter showed 3.5 Ph. I tried to calibrate the meter with powder/solution. The first solution 6.8 is well calibrated. The second solution 4.1 is calibrated to 0.3. After trying to calibrate the meter several times and getting the same results, I threw the pH meter in the trash and bought some paper strips for my pH range. Problem solved. The TDS meter works well.
- Certified
- boring packaging
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