CT 0.04% CYCLOPROPANE 0.1% HEXANE 0.16% TRANS 2 PENTENE 0.2% 2 METHYL 2 BUTENE 0.4% 1 PENTENE 0.4% CIS 2 PENTENE 1% ACETYLENE 1% ARGON 1% CARBON MONOXIDE 1% ISOBUTYLENE 1% ISOPENTANE 1% N PENTANE 1% PROPADIENE 2% 1 BUTENE 2% CIS 2 BUTENE 2% ETHYLENE 3% 1,3 BUTADIENE 3% CARBON DIOXIDE 3% PROPYLENE 3% TRANS 2 BUTENE 4% ETHANE 4% N BUTANE 5% ISOBUTANE 5% METHANE 6% PROPANE 12.5% HYDROGEN BALANCE NITROGEN SIZE HPI CERTIFIED STANDARD-SPEC CGA RESTEK P/N 574320 PRIVATE LABEL BLEND 10%, ACCURACY 5% CUSTOM MIX