... grade welding pure argon gas, 99.99% purity argon gas/industrial gas/welding gas,argon gas for weldingMain market:Africa, ... Working pressure: 150 barArgon (Ar) is a colorless, nonflammable, inert gas. It acts as a simple asphyxiant by ... Absorption, Fourier Transform Infrared; Gas Chromatography - High Efficiency Discharge Detector, Ultrasonic detector, carrier gas when analyzing hydrogen in helium. ...