Ct 0.5% Diethyl Disulfide 0.5% Diethyl Sulfide 0.5% Dimethyl Sulfide 0.5% Tertiary Butyl Mercaptan Balance Isobutane Size Piston 1000CC Certified Standard-spec Customer Owned CGA-Oth Arkema 1000CC, Mole% 800 Psig Helium Pad 507 Grams At 90% Full Sulfinert, Kal-rez O-rings Gravimetrically Certified Report Balance Gas Conc. "st