MSR Guardian Purifier Advanced Portable Water Purifier

Removes Bacteria, Protozoa and Viruses

RRP $599.00
SAVE $71.88 (12%)
Sold Out
Pre order now for August delivery


Make 4 payments of $131.78 over 8 weeks and get it now!

Calculate Shipping

The revolutionary MSR Guardian sets a new standard for water purification.

MSR Guardian Purifier Advanced Portable Water Purifier

The revolutionary MSR Guardian sets a new standard for water purification. Originally developed for the military the Guardian uses an advanced hollow fibre technology to not only filter out Bacteria and Protozoa but also Viruses. It's innovative design is both durable and simple to use. Now water can be sourced from even the most uninviting location with safety and ease. The Guardian comes equipped with a prefilter to remove larger pieces of debris. Unlike other filters the design of the prefilter is such that it doesn't require full submersion in order for the filter to pump correctly allowing water to be taken from the shallowest of sources. The Guardian Purifier is also self cleaning, not requiring any back flushing or cartridge scrubbing. Instead it uses 10% of the water pumped to flush the contaminants in the filter back into the water source.  It's able to rapidly purify water with a flow rate of up to 2.5 litres per minute and each cartridge can filter 10,000 Litres plus of water. It's tough construction is built to withstand drops and freezing and has withstood rigorous testing in the MSR lab. The multi-award winning Guardian Purifier is perfect for global travellers and those heading to remote regions.


  • Meets NSF protocol P248, testing standard used by US military, for removal of viruses, bacteria, protozoa and sediment from "worst-case" water conditions.
  • Pumps up to 2.5 litres per minute
  • Mechanical purifier doesn't require batteries, use a bulb or require chemicals
  • Self cleaning design. 10% of water pumped is used to clean the filter of contaminants
  • Hollow fibre cartridge treats up to 10,000 litres plus
  • Innovative prefilter design doesn't require full submersion
  • Tough construction designed to withstand heavy use, harsh environments, freezing, knocks and drops.
  • Base compatible with wide mouth Nalgene bottles for simple efficient purified water collection

Video from MSR giving an overview of the Guardian Water Purifier




Effective against Protozoa, Bacteria, Particulates, Viruses
Not effective against Chemicals/Toxins
Weight: 490g
Filter Advanced Hollow Fibre
Filter Pore Size 0.02 microns
Flow 2.5 litres per minute
Cartridge life 10,000+ Litres
Field cleanable Self cleaning
Field maintainable Yes
Water bottle adapter Yes
Cartridge replacement indicator Yes


SKU M165_02370
Brand MSR
Shipping Weight 0.7000kg

Be The First To Review This Product!

Help other users shop smarter by writing reviews for products you have purchased.

Write a product review

Katadyn - Combi

Katadyn - Combi

$314.95 10% OFF RRP $349.95

Katadyn - Micropur Forte

Katadyn - Micropur Forte