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- By CategoryMixed GasesGas Comp 4PPM CARBON MONOXIDEGas Comp Amount13.0000000 99.9010000 83.5400000 99.8120000 79.2000000 99.9967000 79.1000000 87.0900000 99.9730000 92.9975000 9.0000000 99.9514000 99.9880000 99.9937000 99.9965900 99.9650000 91.0000000Gas Comp 1PPM NITROGEN DIOXIDE NITROGEN ARGON HYDROGEN OXYGEN