The best-selling filter on the market, delivering long-lasting, fully field-maintainable water filtration.
The MiniWorks EX microfilter is the worldwide best-selling microfilter, delivering long-lasting, field-maintainable water filtration in demanding environments. Engineered for frequent and heavy use, it utilizes MSR’s workhorse Marathon™ EX carbon/ceramic element to ensure clean, reliable, and taste-free water. Thanks to its innovative AirSpring Accumulator™, it’s capable of pumping one liter per minute and the flow rate can be renewed easily and repeatedly in the field—no tools required. It’s lightweight and compact and, most importantly, has been proven reliable by thousands of adventurers just like you.
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
- Reliable
- Durable carbon/ceramic element ensures safe, taste-free water—even with frequent, heavy use
- Field-Maintainable
- Can be cleaned repeatedly for full filter recovery with no tools required
- Fast Flow
- AirSpring Accumulator™ increases filtration speed; up to 1-liter per minute
- Better-Tasting Water
- Carbon core removes unpleasant tastes and odors caused by organic compounds, such as iodine, chlorine, and pesticides
- Water bottle adapter
- Cartridge replacement Indicator
Details
- How is a Filter Different From a Purifier?
- The main difference lies in the level of protection they provide. Generally speaking, a water filter is designed to remove waterborne protozoa and bacteria, but not viruses. A water purifier is designed to combat all three classes of microbes, including viruses
- Because North American backcountries are regarded as low-risk for viruses, filters typically offer a sufficient water treatment method. In places heavily trafficked by humans or where sanitation systems are poor, the risk for viruses increases. In these areas, such as in developing countries, a purifier is recommended
- Additionally, filters physically remove matter and microbes from the water. In contrast, a "purifier" can employ a variety of methods to do so, from physically removing the contaminants to disinfecting the water of them, through UV or chemical treatments
- Why the two treatment device options? The reason is, viruses are just too small for filters to catch. Far smaller than protozoa or bacteria, viruses slip through the technologies used in backpacking filters. Traditionally, UV light, chemical treatments, or boiling were required to deactivate viruses by scrambling their DNA or killing them. Today, new advancements in physical purifiers provide a convenient option to physically remove viruses quickly and easily
- The flow rates of physical purifiers are generally slower than that of filters, because the internal media that removes contaminants has to be small enough to capture tiny viruses. This slows the rate at which water passes through the media, decreasing overall flow rate
- Standards and Certifications
- Awards
Specs
- Design
- Effective Against
- Bacteria
- Chemicals/Toxins
- Particulate
- Protozoa
- Viruses
- Filter Media
- Maintenance
- Field-Cleanable
- Field-Maintainable
- Materials
- Measurements
- Filter Pore Size
- Flow Rate
- 0.26 gal US/min / 1 L/min
- 322 strokes/gal US / 85 strokes/L
- Cartridge Life
- Dimensions
- Weight
- Country of Origin
- Made in the USA of US and Imported Materials
- Manufacturer Product Code
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