... 150bar or 200bar cylinder or customized Certificate:ISO9000 Argon Gas SpecificationName: high purity argon gas Purity:99.9~99.999%Property: colourless ... , odourless, non-flammable, non-reactive, inert gasApplication:Argon is well-known as shielding gas ... . Name Purity Impurity content (ppm)Carry-out Standard Argon(Ar)99.999% O2≤2, N2 ≤5, ...