The worlds most advanced backcountry purifier.
Nothing is safer or easier to use for purifying the most demanding backcountry water sources than the Guardian purifier.
Originally designed for the military, it brings highly advanced technology to global travelers, backcountry users, and those stocking emergency kits.
Fast and easy to use, this pump purifier offers the added viral protection you need when traveling in developing nations and popular wilderness areas.
Its advanced hollow fibre filter offers the most reliable way to purify even filthy water conditions.
Add its long-lasting performance and revolutionary self-cleaning ease, and this may be the only treatment device youll ever need.
Ultimate Protection: Meets NSF protocol P248, testing standard used by U.S. military, for removal of viruses, bacteria, protozoa, and sediment from worst-case water conditions.
Fast & Easy: Pumps a rapid 2.5 L per minute, offering added viral protection without the need for chemicals, bulbs, batteries, or waiting.
Self-Cleaning: Pump self-cleans on every stroke, providing consistently fast flow rates with zero hassle no backflushing or filter-scrubbing ever required.
Long-Lasting: Leading-edge hollow fibre cartridge treats up to 10,000+ liters.
Extremely Durable: Engineered to withstand heavy use, freezing, drops*, and harsh environments.
*Withstands MSR water lab drop testing: 6 ft. to concrete.
Weight: 1 lbs 1.3 oz / 0.49 kg
Effective against bacteria: Yes
Effective against chemicals/toxins: No
Effective against particulate: Yes
Effective against protozoa: Yes
Effective against viruses: Yes
Filter: Advanced Hollow Fibre
Filter pore size (microns): 0.02
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
Made in the U.S.A. of U.S. and Imported Materials
MSR Guardian Water Purifier
For orders below £30 it's currently a very reasonable £3.50 charge.
* We are currently unable to offer an international order/delivery service. Delivery to BFPO usually counts as UK mainland, though (and some BFPO locations are also VAT-exempt).
Orders received by us before 12 Noon are sent by Royal Mail First Class Post or via our courier - depending on their size, weight, value and destination.
Orders received by us from Monday to Noon on Friday are usually delivered the next working day (working days are defined as Monday to Friday, inclusive).
Orders received by us from Friday afternoon to Noon on Monday are generally delivered on Tuesday.
Please note: We usually contact you personally to clarify delivery instructions for larger / more expensive items. This can add a short delay in despatching your order.
For Click & Collect: Please bring order confirmation, the card used for purchase and photo ID to collect your order from our Keswick store during normal opening hours. Please allow 2 working days.