Exceeds EPA purifier requirements for bacteria and protozoa removal
Filters particles as small as .3 microns
Purifies one liter of water in two minutes
Can be cleaned up to 40 times for longer life
Weighs just a little over a pound
The MSR® (Mountain Safety Research®) MiniWorks® Ceramic Filter is a little filter that's huge on value and versatility. No other filter available offers the field maintainability of the MiniWorks filter. That's why it was selected by the Amphibious Raids & Reconnaissance Division of the U.S. Marine Corps as the filter of choice for fast-and-light missions. The MiniWorks filter is ultra-compact, light, easy to use, and can go with you on short day hikes and multi-month international treks. Filter exceeds EPA purifier requirements for removal of bacteria and protozoa. The Miniworks filters particles down to .3 microns and can purify 1 liter in 2 minutes. Use the included scouring pad to clean your filter up to 40 times, prolonging its life. Weight: 16.1oz/456g. Made in USA.
Rated 5 out of 5 by OutdoorMatt Very Happy
There's a never ending debate over water filtration & treatment on the hiking forums - filter vs chemicals vs nothing. I've chosen Aqua Mira tablets in the past, but that does not filter the water. Call me picky, but a bandana does not cut it for me. I'm also hesitant about using chemicals. I initially avoided pump filters because of perceived complexity and stories of clogging. I did my homework and found this MSR MiniWorks very simple in construction and maintenance. Use: The filter is easy to pump, and fills a Nalgene bottle in a reasonable amount of time. I take this on overnights, day hikes and when traveling.
March 29, 2012
Rated 5 out of 5 by Jimmy137 Great Water Filter!
Me and two others went on a 3 day 21mi trail up Bomber Mountain in the Big Horn mountain range near Buffalo, WY. Filter worked great it just took time to fill the bottle up. We quickly found that this filtered so great it was catching alot of particles and needed to be cleaned frequently. A quick scrub fixed that problem. Simple and compact couldn't ask for more in a filter.
December 11, 2010
Rated 1 out of 5 by usuf Broke 2nd day in the backcountry
Like the title says, this filter stopped pumping water after the second day of average use in the backcountry of algonquin park, so we went back to boiling water. It did make some fresh, clean water when it did work though.
I'm now interested in some sort of gravity pump where you fill it up and forget about it.
July 23, 2010
Rated 5 out of 5 by Mouse6196 Great Filter
I have used this filter extensively in all types of water conditions. Works great, and easy to use. Will fill 1 Liter bottle in about 2 minutes. Just keep extra O-rings and parts in the event they fail. We had an internal rubber valve fail. We fixed it ourselves but it would be nice if we had a spare. Good practise anyways. I would buy this filter again if mine ever gets destroyed or lost.
November 21, 2009
These do not remove particles smaller than 0.2 microns. The manufacturer states these should not be used to filter seawater or chemically contaminated water from sources such as mining tailing ponds or near large agricultural operations.