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- By CategoryMixed GasesGas Comp 4PPM CARBON MONOXIDEGas Comp Amount179.9875000 99.6710000 99.9997500 99.9725000 99.9070000 95.9982000 85.4900000 87.4760000 83.5400000 87.0925000 99.9860000 99.9950000 80.4750000 88.0000000 82.0000000 31.4000000 99.8960000 4.0000000 99.8120000 99.9835000 99.9800000 99.9910000 99.9999500 84.9000000Gas Comp 1N BUTANE PPM NITROGEN DIOXIDE HYDROGEN NITROGEN