CT 1000PPM ETHANE 1000PPM HEXANE 1000PPM METHANE 1000PPM N BUTANE 1000PPM N PENTANE 1000PPM PROPANE BALANCE HELIUM SIZE HPI CERTIFIED STANDARD-SPEC CGA 180 BLEND +/- 5%, ACCURACY +/- 2% RESTEK P/N 34525-PI PRIVATE LABEL CUSTOM MIX