MSR IsoPro Fuel Canister

This performance enhancing gas from MSR consists of a mixture of isobutane (80%) and propane (20%). Of which the isobutane is composed of 5% of n-butane, making it extra pure. The clean-burning mixture retains a high internal pressure at lower temperatures in comparison to the ...This performance enhancing gas from MSR consists of a mixture of isobutane (80%) and propane (20%).

Of which the isobutane is composed of 5% of n-butane, making it extra pure. The clean-burning mixture retains a high internal pressure at lower temperatures in comparison to the standard butane and propane mixtures. The special composition allows for a more consistent output during the life of the gas cylinder.