Portable Ozone Detector, 0-20 PPM Ozone Gas Monitor with 0.01 PPM High Resolution, 16H Long Battery Life, Ozone Meter with Alarm, O3 Air Quality Monitor with Temp & Humidity Tester, Orange is up for auction in Industrial & Scientific. The current bid is $15.50, 91% below the $170.00 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.