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- By CategoryMixed GasesGas Comp Amount512.0000000Gas Comp Amount195.0000000 66.0000000 85.4925000 88.8240000 99.8375000 99.9640000 81.6375000 99.9880000 99.9848000 81.8470000Gas Comp 1NITROGEN PROPANE NITROUS OXIDE TUNGSTEN HEXAFLUORIDE PPM CARBONYL SULFIDE