Argon gas is colorless, odorless and chemically inert. It is used as shielding gas in welding, detecting gas and illuminant gas. Standards: a) Pure argon: GB / T4842 - 1995 ( O2d2 THCd2 N2d5 H2d1 H2Od4 b) High purity argon: GB / T10624 - 1995 Packing: 40L seamless steel cylinder If you would like more information about Argon Gas, please contact us or visit our website for more details.