Type Model RP with RFID Tag, 58 Liter - 500 psig/34,5 Bar, Approval: EN12205, U.S. DOT-39 and Canadian TC-39M, Content: 1,45 Vol% Methane, 15,0 Vol% Oxygen, 60 ppm Carbon Monoxide, 20 ppm Hydrogen Sulfide, Balance: Nitrogen