MSR HyperFlow™ Microfilter

Best for

• Day hikes and short excursions
• Multi-day backpacking trips
• Filtering water from varied sources
• Lightweight pack setups

Things to know

• Removes 99.9999% bacteria and 99.9% protozoa per NSF P231 standards
• High flow rate: 3 liters per minute or 1 liter per 20 strokes
• Compact size (7x3.5 in) and lightweight (7.8 oz/221 g)
• Field-cleanable without tools for flow recovery
• Quick-connect adapter fits MSR hydration and disposable bottles

Avoid if

• Does not filter viruses, requiring additional treatment in some regions
• Requires manual pumping, which may be tiring on long use
• Adapter compatibility limited to certain bottle types

How it fits into a trip

Ideal for hikers needing fast, reliable water filtration on day trips or multi-day treks, especially when pack space and weight are limited but water safety is critical.

About this product

Utilising the latest Hollow Fibre Technology and their most advanced engineering, the award winning MSR HyperFlow™ Microfilter is able to make water treatment so small and so easy to use.

Compact when not in use and quick to deploy when needed, the HyperFlow™ Microfilter is a good choice whether on a day excursion or multi-day adventure.

With a flow rate of 3 litres per minute (or 1 litre per 20 strokes), this is the most efficient microfilter ever created.

Included is an adapter to connect to MSR hydration bottles as well as the ability to connection to smaller bottle tops including disposable water bottles.

Features: Testing : Meets NSF protocol P231 for removal of bacteria (99.9999%) and protozoa (99.9%) from beginning to end of filter life in “worst-case” water.

High Flow Rate : Pumps more than 3 litres per minute or one litre every 20 strokes.