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MSR MiniWorks EX Microfilter


Availability: In Stock!

Orders placed in the next 13:29 hours ship today!

Availability: In Stock!

Orders placed in the next 13:29 hours ship today!
Item # MSR356300
The MSR MiniWorks EX is versatile enough for day hikes or extended trips. This field-maintainable microfilter packs small and light.
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The MSR MiniWorks EX is versatile enough for day hikes or extended trips. With its AirSpring accumulator, the MiniWorks can pump 1 liter of water per minute.

The MiniWorks EX is field-maintainable. The durable ceramic element pumps water for years and can be cleaned repeatedly for full recovery, with no tools required for disassembly. This maintainability ensures the reliability you need in remote backcountry situations.

The MiniWorks EX is effective against bacteria and protozoa such as Cryptosporidium and Giardia, and also removes tastes and odors.

The MiniWorks EX weighs 16 oz and measures 7.5 in x 2.75 in.

The kit includes: microfilter unit, hose float, scrub pad, stuff sack and instructions.

California residents: view proposition 65 WARNING

  • Long-lasting: Durable ceramic element ensures protection and will pump water for years.
  • Field-maintainable: Can be cleaned repeatedly for full filter recovery; no tools required for complete disassembly.
  • Fast Flow: AirSpring Accumulator increases filtration speed; up to 1 liter/minute.
  • Effective Protection: Removes bacteria, protozoa (including crypto and giardia), and particulate.
  • Better-tasting Water: Carbon core removes unpleasant tastes and odors caused by chemicals, such as iodine, chlorine, and pesticides.



Best Use Backpacking, Hiking
Removes Giardia; Cryptosporidium; Bacteria; Taste
Item Weight 16.3 oz.
Flow Rate 1 Liter per minute
Field Maintainable Yes
Filter Material 0.2 micron Ceramic
Dimensions 7.5 x 2.75 in.


Real Customer Reviews

Average Rating:
(based on 35 real customer reviews)

1-10 of 35

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Water is a necessity!
Reviewed by cu03alum - March 4, 2017

Likes: Efficient, well engineered design; easy to use even for my 7 year old daughter; minimal effort required to obtain fresh water; plenty of tubing included in case you have to pump from above the river off a bank; perfect for my family of 3 (2 adults & child) or when I go solo/with friends; long filter life; easy to clean either at home or in the field

Dislikes: The size/weight could be a negative, but you can only get so small & lightweight before the product gets shoddy. That being said, I can shed weight & readjust packing to accommodate this, so not really sure if this counts as a negative/dislike.

great quality filter
Reviewed by Mardy K - July 23, 2015

Likes: light and small, tested it out and the water taste great.

Dislikes: none so far

good product
Reviewed by Paul D. - July 14, 2015

Likes: It always give you clean and good tasting water.
Easy to pull apart to clean.

Dislikes: It's a bit heavy for backpacking.
Expensive to replace the filter.

Reviewed by Inside Edge Member - October 7, 2014

Likes: Easy to use!

Dislikes: The bag it comes in has mesh on one side--- great for storage, but in my pack I end up with little dribbles. Ended up using a ziplock Baggie to prevent my things from getting water on them.

Reviewed by Inside Edge Member - April 17, 2014

Likes: Small / light weight.

Dislikes: Pump type.

Reviewed by Nathan D. - December 27, 2013

Likes: Works awesome when clean and used with a relatively new ceramic filter. Had it for about a year and took it on a trip and it began clogging and taking FOREVER to filter water. After replacing the ceramic filter, it worked like new again. Fills about a 32 oz bottle in 2-3 minutes when clean.

Dislikes: Ceramic filters are a bit expensive.

Reviewed by Mark K. - December 12, 2013

Likes: Its the only one I've ever used. I have nothing to compare it too. Amazing how it produces such nice clean water out of Lake Superior. Worked great.

Dislikes: You will be lucky if you can filter 1 liter of water a minute. I kept my filter clean and it took 2x that long. No complaints though.

Reviewed by Inside Edge Member - August 30, 2013

Likes: It can be serviced in the field. Long filter life.

Dislikes: A little on the heavy side.

Reviewed by Marcie C. - June 22, 2013

Likes: Relatively simple to use.

Dislikes: The handle is a little flimsy when trying to pump the water.

Reviewed by Inside Edge Member - June 1, 2013

Likes: The life of the filter and the fact that it is easily cleaned/maintained are what sold me on this filtration system. It is well built, made from durable materials and easy to use. Very simple design. Also mates with most bottles.

Dislikes: Weight is something of a negative, but not killer. This is essential gear. Willing to sacrifice a little here for dependability. Had the Platypus filter had the same kind of life, I probably would have gone that route - that's as simple as simple gets.

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