MSR MiniWorks EX Pump Water Filter

The MSR MiniWorks EX is a best-selling, pump-action water filter celebrated for its proven reliability and field-maintainable design, making it a go-to choice for demanding backcountry adventures, international travel, and emergency preparedness for over a decade. Engineered for frequent use, it delivers safe, great-tasting water at a rate of 1 liter per minute.

The system features a durable Marathon™ EX carbon/ceramic element that removes 99.9999% of bacteria and 99.9% of protozoa, including Giardia and Cryptosporidium, meeting the rigorous NSF Protocol P231 standard. Its integrated carbon core also reduces unpleasant tastes, odors, chlorine, and pesticides, improving the quality of your drinking water.

A key advantage is the AirSpring Accumulator™ technology, which maintains a consistent flow rate and allows for easy, tool-free field cleaning to repeatedly restore the filter's performance. The compact, lightweight design weighs about one pound (14.6–16 oz), includes a storage bag, and its base screws directly onto wide-mouth bottles for convenient use.

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