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MSR Miniworks Ex Purifier System



Ideal for high-traffic wilderness areas.

Whether you're backpacking across The Range of Light or exploring Olympic National Park, you'll want the MSR Miniworks Ex Purifier System when you're filtering water in popular wilderness areas. The kit includes MSR's compact, lightweight Miniworks filter to eliminate 99.9% bacteria, protozoa, and particulate matter, but when the risk of viral contamination is also a concern, simply add the included chlorine-based Aquatabs to eliminate viral pathogens.

  • Comprehensive water filteration system for backpacking and travel
  • Miniworks filter purifies water at a rate of one liter per minute
  • Ceramic and carbon filter cleans water without altering taste
  • Included Aquatabs eliminate viruses without iodine
  • Filter can be cleaned in the field without any additional tools
  • Item #CAS00CK

Purifying Element
ceramic plus carbon, chlorine-based Aquatabs
99.9% bacteria, 99.9% protozoa, 99.9% particulates, 99.9% viruses (with Aquatabs)
Pore Size
0.2 microns
Cartridge Life
~2000 liters
1 liter per minute
Field Cleanable
MiniWorks purifier, Aquatabs purification tablets
[width] 2.75in
Claimed Weight
Recommended Use
backpacking, travel
Manufacturer Warranty
limited 3 years

Tech Specs

California Proposition 65


Cancer and Reproductive Harm -

What do you think about this product?


>Rating: 5


I've had this purifier before,you can really get some water pumped through it. I've also had the $20 one from Walmart and it's pretty good, not MSR of course.


Are the tablets purifying the water while the ceramic tube filters it? Or is the tube also purifying water and tans are an added security

Hey Sam, the ceramic tube filter will be responsible mostly for removing suspended sediment, protozoa and bacteria. The tablet included will be a treatment process for purifying viruses that may remain in the water after filtration. If you have any other questions feel free to reach out to me directly via the information listed above.