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- By CategoryMixed GasesGas Comp Amount252.1000000Gas Comp Amount187.9890000 95.0000000 99.9200000 99.9925000 99.9947900 79.4940000 99.9939000 80.0000000 99.9920000Gas Comp 1NITROUS OXIDE NITROGEN HELIUM TUNGSTEN HEXAFLUORIDE PROPANE PPM CARBONYL SULFIDE