MSR Sweetwater Microfilter Purifier System 4017-271
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MSR Sweetwater Microfilter Purifier System


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Show Description

This kit includes a filter and a bottle of Sweetwater Solution that removes protozoa, bacteria, and viruses. The filter has a 75-micron stainless steel pre-filter, a 0.2-micron fibreglass labyrinth depth filter, and an integral activated-carbon final stage filter that absorbs chemicals, odours, and tastes. A coloured scrim indicates when the filter should be replaced.

  • Flow rate of the filter is up to 1.25L per minute.
  • Contains a shelf-stable and easy-to-dispense 3.5% hypochlorite solution.
  • Pessure-relief valve prevents filter rupture.
  • Fibreglass and carbon cartridge has a nominal life of 757L.
  • Includes enough Sweetwater Purifier Solution to treat 300L.
  • Includes carry bag and water bottle adapter.
  • When the solution is used with the filter, it meets EPA certification as a purifier.

Tech specs

Show Tech specs
Ideal for Travel
Filter type

Water can be treated using various types of filters, chemicals or non-chemical purification methods, or a combination. Filters on their own will not remove viruses as they are too small.

Silica depth filter plus sodium hypochlorite
Output 1L/min
Dimensions 19 x 5cm
Cartridge life

The life of the filter cartridge is based on the quantity of water you can treat before the cartridge is no longer effective. This does not apply to battery operated or chemical filter systems.

Filter size

A 0.5 micron or smaller filters protozoa and some large bacteria; 0.2 micron or smaller filters smaller bacteria such as campylobacter.

Effective against protozoa

Protozoa are larger than one micron and include cryptosporidium and giardia.

Effective against viruses

Most viruses are in the 1.0 micron size range, but they can be as small as 0.002 microns.

Effective against particulate

Particulate consists of very small bits and pieces such as dirt or bugs.

Effective against bacteria

Bacteria can cause illnesses such as diarrhea and dysentery and are about 1.0 micron in size, although some can be as small as 0.2 microns.

Made in USA