Portable ozone output analyzer ozone gas detector 1.Resolution is 128*64 LCD screen 2.High-precision electro-chemical sensors Portable ozone output analyzer ozone gas detector NT 8313 Portable Ozone(O3)Gas DetectorNT-8313 Portable O3 gas analyzer is a hand-held instrument which can continually test O3.This product is applicable to environmental monitoring, industrial production ,chemical and ...