MSR MiniWorks EX Backcountry Water Purifier System

- Microfilter water filter pump and 50 purification tablets for hiking, backpacking, camping, travel, survival, and emergency preparedness - Replaceable carbon and ceramic filter removes bacteria, protozoa, organic compounds, and particulate; Aquatabs protect against viruses - Pumps at a rate of one liter per minute; compatible with a variety of wide mouth water bottles, and hydration bladders (sold separately) - Effective against viruses (99.99%), bacteria (99.9999%), and protozoa (99.9%); filter treats up to 2,000 liters of water and each tab treats 2 quarts - Pump measures 7.5 x 2.75 inches and weighs 1 pound; storage bag included; manufacturer’s limited lifetime warranty; made in the USA

From the manufacturer

Mountain Safety Research

MiniWorks EX Purifier System

MSR Purifiers & Microfilters

Safe Water Starts With Science

MSR has always been a company of engineers, inventors and unruly dreamers. Larry Penberthy started the company in 1969 on a personal crusade against unsafe equipment. Today, we’re still an intrepid team obsessed with creating the most reliable, high-performance gear possible.

Whether it’s defying the status quo in equipment design or radically shifting the social mindset, we believe the greatest innovations?and explorations?are inspired by the world’s unruly dreamers.

Photo By: Scott Rinckenberger

Durable carbon/ceramic element ensures safe, taste-free water?even with frequent, heavy use.

Effective against viruses (99.99%), bacteria (99.9999%), protozoa (99.9%) and particulate. Meets U.S. EPA drinking water standards* and NSF protocol P231 testing standard.

Aquatabs tablets inactivate viruses without bad-tasting iodine. Includes 50 individually packaged tablets. Each tablet treats up to 2 quarts of water depending on conditions.

Filter can be cleaned repeatedly for full flow recovery with no tools required.

From our fast-and-light microfilters to our gravity-powered systems, we apply the latest technologies and rigorous testing to assure you safe water on every adventure.

We invest in an on-site water lab with staff scientists, and individually test our devices to ensure they deliver greater safety and ease of use.

Every MSR filter and purifier features: