MSR Guardian Portable Water Purifier

Rated 4.8 out of 5
Based on 4 reviews
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Description

Nothing is safer or easier to use for purifying the most demanding back-country water sources than the Guardian purifier.
Originally designed for military squads, it brings this highly advanced technology to global travelers, back-country 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 fiber 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 you’ll ever need.

Details:
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 liters 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 fiber cartridge treats up to 10,000+ liters.
Extremely Durable: Engineered to withstand heavy use, freezing, drops (tested up to 6ft onto concrete) and harsh environments.

Specifications:
Color Smoke
Effective against protozoa Yes
Effective against bacteria Yes
Effective against particulate Yes
Effective against chemicals/toxins No
Effective against viruses Yes
Weight 490 g
Filter media Advanced Hollow Fiber
Filter pore size (microns) 0.02
Flow (L/min) 2.5 liters per min
Cartridge life 10,000+ liters
Field cleanable Self-Cleaning
Field maintainable Yes
Water Bottle Adapter Yes
Cartridge replacement indicator Yes
Country of Origin Made in the U.S.A. of U.S. and Imported Materials

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average rating 4.8 out of 5
Based on 4 reviews
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100% of reviewers would recommend this product to a friend
4 Reviews
Reviewed by Bill R.
Verified Reviewer
I recommend this product
Rated 4 out of 5
Review posted

It's a heavy large purifier but worth it.

I bought mine in 2016 and it's been flawless. I fill a camel back with a hose adapter so I don't even have to take the bladder out of my pack (but I do have to put my hand on the bag to make sure I don't over fill it).

The most impressive thing for me was filtering the creamy looking glacial water on the Rees-Dart track. It was effortless and the water quality excellent.

Definitely worth the price and great peace of mind.

I've had to do zero maintenance on it so far.

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Reviewed by Bruce, from New Zealand
I recommend this product
Rated 5 out of 5
Review posted

MSR Guardian..bombproof

I got this filter 2 yrs ago for travel in India and later local use in NZ. The Pros: it is really easy to use, durable, requires minimal maintenance and the filter is seriously good so that even viruses get caught. The Cons: for solo tramping it is a bit on the heavy side and (in NZ) it is perhaps a bit over the top with filtration performance since water borne viruses are not (yet) a big problem. The big con is that it is very expensive. Conclusion: if you have the money, this filter is definitely worth it despite the weight. The performance and reliability are excellent, the maintenance is simple, and filter lasts 10 times longer than a lot of others (and does a better job). If you filter a bit of water do the economics (look at the price of the other replacement filters knowing that you will need to do this 5-10 times before replacing the Guardian filter) then start thinking about the extra maintenance needed for other filters (back flushing).

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Reviewed by Alistair W.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

MSR Guardian

Great bit of kit, ideal for clean water!

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Reviewed by Neki P.
Verified Buyer
I recommend this product
Rated 5 out of 5
Review posted

Simply the best

Army grade water filter - this is brilliant . String construction , easy to use . Perfect for an emergency kit and use . Massive output . Expensive but worth it ... Gear shop are one of the only ones to stock this amazing item !

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