MSR Miniworks EX Microfilter

MSR Miniworks EX Microfilter

MSR Miniworks EX Microfilter is rated 4.4 out of 5 by 164.
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4.4 Star Rating

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Product Description Item No.   10238404

The MSR Miniworks EX Microfilter is an easy way to pump your way to filtered water. The ceramic filter is durable and ready to go, filtering up to 2000 liters of water while you're backpacking or visiting a developing country. Pumping up to 1 liter per minute, you could set up a pretty decent water-filtering race.

FEATURES of the MSR Miniworks EX Microfilter

  • Long-Lasting: Durable ceramic element filters up to 2,000 liter
  • Solid Activated Carbon Core: Removes unpleasant tastes and many chemical contaminants
  • Fast Flow Rate: AirSpring accumulator increases filtration speed up to 1 liter per minute
  • Field-Maintainable: Can be cleaned repeatedly for full filter recovery, no tools required for complete disassembly
  • 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
  • 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
  • Made in USA

- + Product Specifications
Features: Replaceable Filter, Made in USA, Field Cleanable
Best Use: Camping, Hiking, Backpacking, Car Camping
Weight: 16 oz
Effective Against: Protozoa and Bacteria
Cartridge / Cycle Life: 2000 liters
Filter Type: Pump
Packed Dimensions: 7.5 x 2.75 in.
Filter Rate: 1 liter / minute
Eco Friendly: Yes
Disclaimer: We only ship this brand to US Addresses.
Rated 3 out of 5 by from It is OK... I have had this filter for a couple years now. While I have always loved and trusted MSR gear, this filter has frustrated me many times in the backcountry. I can usually get about 1-3 liters out of it before it stops working, pushing water back down the hose rather than through the filter. I take it apart and scrub the filter only to get about 1-2 more liters before its 'clogged' again. I only filter in mountain lakes and streams that are very clean and have no visible 'cloudiness' to them. While its nice to see this filter is catching more than I can see, I feel a product like this should be able to filter way more than a couple liters before having to be cleaned. If I am trying to fill multiple bottles for the night, friends with other filters get about 3 to my 1 bottle. I love MSR stoves, but I have a tough time liking this filter.
Date published: 2018-05-02
Rated 5 out of 5 by from Simple to use I've used this filter to purify about 5-6 gallons of river water with absolutely no problems... Excellent product and Moose Jaw delivered two days earlier than expected... MSR and Moose Jaw rocked it...!
Date published: 2018-04-24
Rated 5 out of 5 by from Outstanding product, even after many years Over 22 years and still going strong! It's not the most compact filter, and not the lightest, but it is particularly easy to maintain. Fantastic filter that tends to have very little go wrong, as long as the water is not too murky. I recommend that you let silty or muddy water settle out before pumping. Otherwise, you'll be cleaning the filter every litre. I love the ceramic filter that lasts and lasts--thousands and thousands of litres, year after year. The only time I have ever had a problem with the filter was when dropped it on a rock and cracked it while cleaning it. Pop in a new filter and good to go for more thousands of litres.
Date published: 2018-03-07
Rated 5 out of 5 by from Over 10 years old and still working perfecty I purchased my MiniWorks for backpacking, but for the last ten years I have used it to filter all of our drinking water for the 2-4 weeks we are at our cabin in Newfoundland. It still works perfectly. I came to the website to see if I should consider replacing any parts or at least having spare parts on hand next year.
Date published: 2017-10-16
Rated 5 out of 5 by from My personal favorite Cleanable and sturdy for long trips to places where the water is dirty and silty. I have used it for many long trips to South America, Nepal, and India. It is slow and you have to clean it sometimes twice a day if you need a lot of water, but it keeps right on working after months of cleaning the filter. You also have to lubricate the pump mechanism now and then or it squeaks. The real deal for me is that all the other non cleanable filters simply work until you get to dirty water (like the tap water in Kathmandu) then they clog quickly and are done. The MSR mini waterworks is the only filter I have found that just keeps going cleaning after cleaning. Slow, heavy and require ongoing maintenance. Bottom line, the best!
Date published: 2017-10-03
Rated 5 out of 5 by from I own 2 of them! I see some negative comments about the filter plugging up after a liter of water and then using tablets for the rest of the trip. Are you insane? The filter plugged because of all the nasty dirt in the water plugging it up. Truly clean water will not plug up this filter, even after 20+liters of water. If you pump dirty water in it will plug up faster and that proves the water is not that clean. I have 2 of these and keep one in my camping gear and the other in my Search and Rescue bag.
Date published: 2017-09-20
Rated 5 out of 5 by from Yes Makes filtering water fast and efficient. It is lightweight and very pack friendly
Date published: 2017-09-02
Rated 1 out of 5 by from Stopped working our first time using it in the field. We bought this filter and tested it out at home using clean water and it seemed to pumped fairly quickly and easily. We took it with us camping the next day and I tried to filter some clear, glacial water which had hardly any dirt or sediment at all. The first liter filtered easily, then the next was a little harder, until finally the filter stopped filtering water all together. The water would not pass through anymore and with each pump the hose would fill up and then exit back out through the hose again, instead of passing through the chamber. I took it apart and cleaned it a bit and dumped out the access water that was not able to pass through the chamber. It started working again for a moment and then once again, stopped filtering water all together. Ive never bought a filter that didn't even work right its first time. This thing is garbage.
Date published: 2017-09-02
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what is the purpose of the red crescent shaped piece from the picture?

Asked by: curious george
When the gage (red crescent shaped piece) can fit around the filter element, the element has been cleaned to the point it needs to be replaced. When the filter is cleaned using the included cleaning pad, the cleaning pad removes bit of the filter element. Eventually the filter element will be reduced to a minimum size for proper effectiveness and will need to be replaced. The gage will allow you to determine when that time has come.
Answered by: bouyscout
Date published: 2018-05-22

Reviews show ups and downs. Has there been any type of redesign on this product lately ? Or is it operator era ? I would like to purchase one, but reviews leave me wondering. Thanks

Asked by: Brad
Brad, There has not been a redesign on the MSR Miniworks EX Microfilter. I took a moment to read through the reviews and, Im not seeing a consistent issue. The thing in the reviews that is consistent is praise. I have seen the MSR Miniworks EX Microfilter filter water, and it worked wonderfully. I hope that this helps. Happy Trails.
Answered by: Rocko Gigsby
Date published: 2018-05-22
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