MOUNTAIN SAFETY RESEARCH (MSR) HYPERFLOW MICROFILTER CARTRIDGE REPLACEMENT

A small, lightweight replacement cartridge for the HyperFlow Microfilter. Because the filter uses Hollow Fibre Technology, where fibres are somewhat more brittle than traditional filter materials, we recommend packing a spare cartridge on longer trips – here it is.

• Note: this is not compatible with the AutoFlow Gravity filter.
• Do not allow the cartridge to freeze after initial use.