Gas mixture 2: C6+ without O2 10-liter cylinder for purchase with PO14 DIN 477 DIN 14 connections Particularity: cert. according to PTB-A 7.63 only upon request. Please take note of the special delivery times. Mixture 2 consists of the components (mole percent) Nitrogen 4.00 Carbon dioxide 1.50 Methane 88.90 Ethan 4.00 Propane 1.00 i-butane 0.20 n-butane 0.20 neo-pentane 0.05 i-pentane 0.05 n-pentane 0.05 n-hexane 0.05