... industrial grade 99.99% purity argon gas for welding, welding argon gas of purity 99.9%, 99.99% and 99.999% Industrial grade welding pure argon gas, 99.99% purity ... market:Africa,Middle-East,South Asia,Oceania ect. Purity: 99.9% ,99.999%, 99.999 Working pressure: 150 barArgon (Ar) is a colorless ... 2-6%CO2 2-16% N2 8-25%HeCO 2-6% CO2 2-10%N2 8-25%Sterilizing Gas Product nameTechnical index ...