Labtron Handheld Ozone Tester detects ozone concentrations (0-5 ppm) with 0.001 ppm resolution. It operates between -30°C and 60°C, stores up to 16,000 samples, and features on-screen historical data, USB export, and a rechargeable battery. Integrated temperature and humidity detection offer flexible controls. Login Login 0 repins 0 comments 0 likes