Negative Positive
Title: Highly inaccurate
Review: The electronic tester showed a level of 9.4 to 10.3, and based on this I contracted mitigation with a contractor that guaranteed to reduce the level below 2.0. After mitigation the electronic tester showed levels of 3.1 to 3.8. The contractor supplied charcoal testers that showed the level to be 0.5. I purchased another charcoal tester that showed the level as 0.7. I then returned the electronic tester, then tested with an additional charcoal tester and the mitigation system off, which showed the pre-mitigation level as 4.9. Based on the pre-mitigation level of 4.9, I would still have contracted mitigation, but the electronic tester proved unreliable.
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