MSR Guardian Purifier Pump

MSR Guardian Purifier Pump is rated 4.5 out of 5 by 8.
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4.5 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
Awards: OutDoor Industry Gold Award Winner - 2015, Outside Gear Of The Show - 2016, OutDoor Industry Telegraph - 2016, Editors Choice Summer - 2016, Backpacker Magazine Editors' Choice Award - 2016, Gear Institute Best New Gear Outdoor Retailer Summer - 2015, Outdoor Retailer Best of Show Award - 2015, National Geographic Adventure Gear of the Year Award - 2015, Innovation Award Winner Outdoor Retailer Summer - 2015, Gear Of The Year - 2015, Outside Magazine Gear of the Year Award - 2016, Gear Junkie Best In Show Outdoor Retailer Summer Award - 2015
Filter Rate: 2.5 liters / minute
Weight: 17.3 oz
Disclaimer: We only ship this brand to US Addresses.
Length: 8.2 in.
Features: Made in USA, Self-Cleaning
Cartridge / Cycle Life: 10,000 liters
Best Use: Travel, Camping, Basecamp and Expedition
Effective Against: Protozoa, Bacteria and Viruses
Filter Type: Pump
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 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 Works as advertised Bought this in preparation for a hike in desert canyon country. Used it to filter 30+ liters of very dirty water without any problem at all with clogging. Purified water looked good, tasted fine, no sediment. Faint odor remained, however - the original water stank from decaying leaves, etc. My friends gave up on their conventional filters after a few liters and Steripens were useless because of turbidity.
Date published: 2016-04-30
Rated 5 out of 5 by from Best one yet I have a collection of water filters including the older model MSR hyperflow filter and the new 3 ounce Sawyer, but this one can't help but make you smile when used. The Sawyer is a pain to fill the dirty water bag, used a Platypus bag with only slightly better results. The older Hyperflow filter is a pain to backflush and gets hard to pump, replaced the filter but the new one is even harder to pump. This new high-dollar filter leaked water out the handle-side of the pump when new, took it apart and spread the lube around better and it sealed up fine. Used it on a overnight pack and was very very happy with how little effort the pump takes and how fast it fills a bottle. It is a little bigger than the hyperflow but sooo much better. The inlet filter looks overkill and will be hard to use in a small water seep but I am sure it will work out. Overall it is so fast and easy to use it is well worth the price.
Date published: 2016-06-11
Rated 5 out of 5 by from Potentially the best filter ever made so far. I bought this for my daughter who is now in Nicaragua. With widespread contamination of wild water (lakes, rivers etc) with human feces and even tap water uncertain, I wanted the anti virus feature. I have used Sweetwater, and other brands for bacteria and cysts but the no chemical virus elimination is promising. Since I have not tested this in a clinical lab setting I can't promise you there are no viruses. I will say the thing pumps water like no tomorrow and the design seems sturdy and simple. While most people are using bottled water and even Coke when the local retail doesn't do bottled water, my daughter is free as bird to pump her own. I will say that I have some other brand bottles besides Nalgene and they don't work with the clean side threads on the Guardian. So you must carry at least one Nalgene standard widemouth with you.
Date published: 2017-01-05
Rated 5 out of 5 by from Multipurpose Investment I could say it's the most advanced, easy to use portable purifier on the market, but that's old news. Yes, it is bulky and heavy for backpacking compared to filtering-only options, but it purifies(!), and freezing will not render it unusable. It is also perfect for international travel, mission trips, and home emergency kits.
Date published: 2016-09-26
Rated 5 out of 5 by from Amazing purifier, Easy to use, and MSR quality! Purifying some ice cold water in the Weminuche Wilderness! Performs flawlessly! Reminds me of camping as a child pumping water from the pump in the ground! So easy to use it's a breeze. I recommend this product A++
Date published: 2016-09-01
Rated 5 out of 5 by from Ace up your sleeve! Carrying this water purifier is definitely like having an ace up your sleeve. It is really awesome knowing that you are going to be able to get water regardless of how funky the water source might be. I was able to borrow this filter from a coworker and I am looking forward to buying my own. Hiking 6 days across Isle Royale National Park I was able to carry less water knowing that I was going to be able to get water from swamps and puddles across the island. I didn't even blink while getting water from sources that ruined other peoples filters. The self cleaning aspect is pretty neato, and boy does the water taste great! Seriously, it is better than the water that comes out of my tap at home. Maybe the only negative I can say about the filter is that the input hose tends to float with the mesh screen floating upwards, which drastically reduces the water flow. Not a big deal though. The flow rate is awesome and it fills your bottles quick! I really can't say enough good things about this filter. Hands down the best on the market. My brother will be leaving for the Peace Corps in Zambia shortly, and I plan on getting him one for his stay.
Date published: 2016-09-16
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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
  • 2017-01-23T08:47CST
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