gas mixture 1: C6+ with O2 10-liter cylinder for purchase with PO14 DIN 477 DIN 14 connections Filling (47 675 hPa) Mixture 1 consists of the following components (mole percent) Nitrogen 4.00 Carbon dioxide 1.50 Oxygen 0.50 Methane 88.40 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