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- By CategoryMixed GasesGas Comp 4PPB ETHANEGas Comp Amount199.9499500 55.0000000 2.5000000 99.9856000 99.9994300 99.9870000 99.9910000 99.9200000 99.6894000Gas Comp 1PPM NITROGEN DIOXIDE CARBON DIOXIDE HYDROGEN NITROGEN N BUTANE HELIUM
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