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United States of America, Chicago
1 Level
516 Review
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Review on ๐Ÿงช Hanna Combo pH/EC/TDS/C/PPM Tester HI98129: Reliable and Efficient Multi-Parameter Testing Solution by Alyssa Turner

Revainrating 4 out of 5

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Hanna customer service doesn't exist. I ignored all attempts to contact her. I've gone through two of these pens. Both gave intermittent readings and knocked me out shortly after changing the pH sensors. I switched to the Blue Labs ph and ppm knobs. They are leaps and bounds ahead of Hanna in terms of ease of use and customer service.

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