MSR Guardian Water Purifier

One Size
This product qualifies for free delivery

All about this product



The MSR Guardian Water Purifier stands out as a highly secure choice for treating contaminated water. Whether you find yourself in diverse environments, this purifier offers the capacity to clean up to 10,000 liters of water without relying on chemicals, bulbs, or batteries, ensuring a reliable source of hydration.


Featuring a straightforward pump mechanism, the Guardian employs a patent-pending self-cleaning system with each stroke, eliminating the necessity for backflushing or filter scrubbing to maintain optimal flow. Operating at a rate of 2.5 liters per minute, this purifier guarantees a swift and consistent supply of clean drinking water, even from the most challenging water sources, supporting you and your team in staying refreshed and focused on your tasks.

Technical details

Ideal use:

 Backpacking, Mountaineering, Travel, Trekking

Key features:

Effective against: Protozoa, Bacteria, Particulate/sediment, Viruses

Engineered to withstand heavy use and harsh environments

Cartridge replacement indicator

Water purifier with pump action

Advanced hollow fibre filter

Filters upto 10,000+ litres

Maintainable in the field

Water bottle adaptor

Self-cleaning design

Tech specs:

Filter pore size: 0.02microns

Flow: 2.5L/min



Water purification features
Active carbon, Effective against protozoa, Filters bacteria, Filters flavors / chemicals, Filters viruses, Rechargeable, Water bottle adapter
Purification method
Number of treatments


Weight (g)
Dimensions (cm)
7.6 x 11.4 x 21

Other features

Ideal For
Backpacking, Everyday Walking, Mountaineering, Outdoor sports, Travel, Trekking
Outdoor accessories
Water Purification
Product Code
Reviews (14)

User Reviews (14)

Let us know you agree to cookies

We use marketing, analytical and functional cookies as well as similar technologies to give you the best experience. Third parties, including social media platforms, often place tracking cookies on our site to show you personalised adverts outside of our website.


We store your cookie preferences for two years and you can edit your preferences via ‘manage cookies’ or through the cookie policy at the bottom of every page. For more information, please see our cookie policy.