MSR Guardian Purifier Pump

MSR Guardian Purifier Pump is rated 4.5 out of 5 by 40.
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4.4 Star Rating

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Product Description Item No.   10304112

The MSR Guardian Purifier Pump is a water purifier for clean drinking water in the backcountry, traveling and emergency kits. Think of it as your own personal kitchen faucet, if your water always went directly into a bottle or other handy container first. The Advanced Hollow Fiber filter provides a 2.5L per minute flow, so that delicious water will quickly be able to quench your parched mouth, minus those pesky viruses, bacteria, or other harmful gunk. The self-cleaning cartridge has a life of 10,000+ liters, grab your calendar and schedule in plenty of time for the backcountry.

FEATURES of the MSR Guardian Purifier Pump

  • Stores easily
  • Reliability on long trips
  • Physically removes viruses, bacteria, protozoa, and silt in one easy step
  • Treats up to 10,000 liters
  • Built to withstand freezing temperatures as well as drops from up to 6 feet
  • Revolutionary self-cleaning performance means never back flushing again
  • 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 and Easy: Pumps a rapid 2.5 liter per minute, offering added viral protection without the need for chemicals, bulbs, batteries, or waiting
  • Extremely Durable: Engineered to withstand heavy use, freezing, drops, and harsh environments
  • Nothing is safer or easier to use for purifying the most demanding backcountry water sources than the Guardian purifier
  • Originally designed for military squads, it brings this 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 fiber filter offers the most reliable way to purify even filthy water conditions

- + Product Specifications
Length: 8.2 in.
Awards: Outdoor Retailer Best of Show Award - 2015, Gear Of The Year - 2015, Outside Gear Of The Show - 2016, OutDoor Industry Telegraph - 2016, OutDoor Industry Gold Award Winner - 2015, Backpacker Magazine Editors' Choice Award - 2016, Gear Institute Best New Gear Outdoor Retailer Summer - 2015, Editors Choice Summer - 2016, Innovation Award Winner Outdoor Retailer Summer - 2015, National Geographic Adventure Gear of the Year Award - 2015, Gear Junkie Best In Show Outdoor Retailer Summer Award - 2015, Outside Magazine Gear of the Year Award - 2016
Filter Rate: 2.5 liters / minute
Weight: 17.3 oz
Disclaimer: We only ship this brand to US Addresses.
Features: Made in USA, Self-Cleaning
Cartridge / Cycle Life: 10,000 liters
Best Use: Basecamp and Expedition, Travel, Camping
Effective Against: Protozoa, Bacteria and Viruses
Filter Type: Pump
Rated 1 out of 5 by from Leaking right from the box! I purchased one of MSR Guardian Purifier Pump for trek in Himalaya mountains. We start on 17th November and it should be our only water sours on the trek. But there is a problem with it. When I pump water, Purifier starts to leak from black rubber base (sometimes i even can see bubbles!). When I try to do integrity test it also starts to leek under the bottle. I’m using MSR products for years and I got used to trust them because they never failed. It is very disappointing that product from the box does not work properly. Especially when the health and life of our group in the mountains will depend on it.
Date published: 2016-11-04
Rated 5 out of 5 by from ULTIMATE PURIFIER ! Took it to my favorite spot up in the mountains and purified water that was brown from rain drainage coming off the mountain , tasted great and no grit , the next test I put it through was to purify the water that was in my green un cleaned swimming pool , tasted great
Date published: 2016-02-03
Rated 5 out of 5 by from Guardian Filter I purchased this product a few months ago and it has performed just as advertised. We did a six day trek on the PCT last month finishing with The Whitney Summit. The three of us relied solely on the Guardian for our water purification. The speed and ease of use was great. We also own a couple of other MSR filters, but they have been stored away for back up. No drops just clean fresh tasting water. Since our PCT trek, we have hoofed it into some areas with not the greatest selection of running creeks, I would say a couple of times we pulled from stagnant pools, but still the Guardian performed.
Date published: 2016-08-16
Rated 1 out of 5 by from Died after 15 liters! Not ready for field use. I purchased the MSR Guardian after speaking with MSR on 3 different occasions as well as several local shops. All assured me the Guardian was the perfect filter to take to the Grand Canyon to filter silty water. After filtering 15 liters of moderately silty water the filter died, all the water was being returned via the outlet hose. Following the directions, I cleaned the pressure relief valve but found it to be perfectly clean. The next step in the instructions is to replace the filter, unfortunately not an option deep in a remote section of the Grand Canyon. The filter appeared to be perfectly clean. When I called MSR, they admitted the Guardian has problems with silty water and was told “we’ve had problems with this pump”. Of course this is unacceptable since they advertise this pump as being made for “worse case sediment”. This ruined a 7 day backpack and forced us to hike out and drive 50 miles to purchase some treatment tables. I should have had a backup but everyone I talked to about this pump assured me of its reliability. I expected much more of this product and from MSR Customer service.
Date published: 2016-11-13
Rated 1 out of 5 by from leaking after one month of use Major leak at the base of the filter. after only one month of purchase. I bought 4 for our outdoor program and 3 of them are leaking. there is definitely a manufacturing problem. Too bad the few time it worked it was great.
Date published: 2016-08-01
Rated 5 out of 5 by from Filter review I recently purchased the Guardian after my old unit broke two years in a row. Good thing I was with a friend who had a filter. This time I went all the way to the top with the Guardian. Although I have not had in the field it filters a lot of water fast and the filter intake unit is great. It allow a full draw even in shallow water and does not lose it's prime
Date published: 2016-06-02
Rated 5 out of 5 by from Must have for safe and reliable water. This is the best water purifier on the market, hands down. This is an amazing product, I used this for an extended hike and knowing I had the ability to quickly acquire water from nearly any mud-puddle or stream without the use of nasty tasting tablets or having to hang around for a gravity feed system. (pun intended) If you are even looking at this as an option you should just accept you need it and buy it already! (and yes the student discount works on this) :)
Date published: 2016-03-07
Rated 5 out of 5 by from Pure, Sweet Water ! I bought a silver / ceramic filter last year for about the same price that needs to be cleaned and is as delicate as glass! This is so much more rugged, less maintenance, faster, and after a months usage, the water still tastes better! I bought a second one to keep on hand in my camping kitchen /shtf mess kit and the other in the backpack. Water isn't just gold, it's life!
Date published: 2016-06-11
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For the MSR Guardian; are spare parts/components available? Or is a second unit the best "spare"? 

Asked by: iceman01
Hey there, Thanks for reaching out to us! Your best bet if you're seeking spare parts would be to contact MSR directly at: 206-505-9500.
Answered by: Rocko Gigsby
Date published: 2016-02-15

Where can the spare filters be bought & about how much do they cost?

Asked by: Hanko
Hey lugnut!! Look on page 2 & you will find the replacement filters! DUH!
Answered by: Hanko Jr
Date published: 2016-09-07

I didn't see any information on whether the filter could be changed, or if there were any indicators on when it needed changed. Looks awesome, definitely considering the purchase.

Asked by: Mike
Hey there, Thanks for the question. The filter cartridge on this item can be replaced/changed. You typically will know to change it when the flow rate drops to less than 1L a minute when pumping 70 strokes per minute. The filter will still be purifying water, but as the flow rate drops with use more wear appears on the internal parts. I hope this helps.
Answered by: Rocko Gigsby
Date published: 2016-05-15

Is the price correct on this filter? $349.95?

Asked by: Rafi
Hey there, Thanks for reaching out to us! Listen....if you EVER want to pay more for ANY item we just let me know, k? I'll be more than happy to make that happen. We'll set up a system. Just you and me, buddy. Pals for life! But, as for this item, it is in fact $349.95. Hope this helps you out!
Answered by: Rocko Gigsby
Date published: 2016-05-23

Does this only screw on to wide mouth bottles?

Asked by: rotsfactor4
Hey there, Thanks for reaching out to us! The pump does not adjust in size and can only screw on wide mouth bottles.
Answered by: Rocko Gigsby
Date published: 2016-02-24

Will this convert salt water?

Asked by: Duke
No, this is simply a filter which does not remove chemicals, toxins, or heavy metals. It is effective down to 0.02µm (microns). (Technical info from the MSR website). If you're looking for a portable, hand operated desalinator, check out Katadyn.
Answered by: Dane
Date published: 2016-02-19
  • 2016-12-09T09:48CST
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