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Review on ๐ŸŒŠ 2-Pack PH Water Digital Tester Meter with TDS EC PPM Pen - Ideal for Household Drinking, Pool, and Aquarium Uses by James Grindberg

Revainrating 1 out of 5

Not calibrated.

No matter what I do, the pH meter does not recognize the right solution. It started reading buffer 6.86 as 4.00 then everything is off and I can't get it to register the pH for any buffer. I even tried using random liquids to shift the calibration curve to the point where Buffer 4.0 was recognized as 3.88-3.93 (okay I can work with that) and Buffer 6.86 as 6.7-6.75 (good of course, close enough for what). I have to measure). Then I tried again to calibrate in buffer 6.86 WHILE READING 6.75 AND STILL REGISTERED THAT IT IS IN BUFFER 4.0 AND THROUGH ALL OUT.

Pros
  • Substance analyzers
Cons
  • Interchangeable