Helium Gas Purity Tester is perfect for sampling and quantitative analysis of binary process streams of industrial gases and other gas mixing, cylinder identification, and atmosphere control applications. Also this is featured with digital readout of percent air in helium in 0.01% increments. This Helium Gas Purity Tester is basically a thermal conductivity type gas analyzer for detecting 0.01% up to 99.995% air in Helium. We provide this tester in several advance featured & in several specifications as per customers choices.