MSR Guardian Military-Grade Water Purifier Pump for Backcountry, Global Travel, and Emergency Preparedness
The MSR Guardian Water Purifier Pump was originally designed for the U.S. Military, who turned to MSR’s advanced water filtration technology to keep troops safe and healthy in every remote corner of the globe. Six years of research and development went into engineering the pump purifier, which removes viruses (such as norovirus, rotavirus, hepatitis A),
The MSR Guardian Water Purifier Pump was originally designed for the U.S. Military, who turned to MSR’s advanced water filtration technology to keep troops safe and healthy in every remote corner of the globe. Six years of research and development went into engineering the pump purifier, which removes viruses (such as norovirus, rotavirus, hepatitis A), bacteria (such as E. coli. Shigella, salmonella, cholera), protozoa (such as giardia, cryptosporidium, amoebae), and sediment from contaminated water sources anywhere on earth. It meets the strict NSF protocol P248 testing standard for the U.S. Military, using medical-grade fibers to provide protection from the tiniest microbiological waterborne threats. Designed to be fast, simple, and safe, it pumps at a rapid 2.5 liters per minute, has a long-lasting advanced filter that treats up to 10,000 liters of water, and withstands freezing temperatures, drops, heavy use, and harsh environments. A self-cleaning mechanism ensures reliability, flushing contaminants in the filter back into the source, so there is no backflushing or scrubbing cartridges to maintain flow. The MSR Guardian Water Purifier Pump is ideal for wilderness, backcountry use, expeditions, global travel, and emergency preparedness. It measures 8.2 x 4.7 inches and weights 17.3 ounces. Made in the USA.
Product Features
- Military-grade water purifier pump removes viruses, bacteria, protozoa, and particulate from contaminated water sources virtually anywhere on earth
- Meets NSF protocol P248 testing standard of the U.S. military, using medical-grade fibers to provide protection from the tiniest waterborne threats
- Pumps at a rapid 2.5 liters per minute, treats up to 10,000 liters of water, and withstands freezing, drops, heavy use, and harsh environments
- Pump self-cleans on every stroke, providing consistently fast flow rates with zero hassle-no backflushing or filter-scrubbing ever required
- Ideal for backcountry, expeditions, global travel, and survival; purifier pump measures 8.2 x 4.7 inches and weighs 17.3 ounces; made in the USA
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So I ordered it and when I received the purifier I immediately loved it,… however….. Length:: 0:40 Mins I did a lot of research and I reviewed a lot of marketing videos and was convinced that this product was what I wanted. I found only one negative review that stated the product was leaking from the base o-ring,..no big deal,… so I ordered it and when I received the filter I immediately loved it…. (the concept that is). Why??,…. after testing it several times I unscrewing the nalgene water bottle from the filter and I inadvertently loosened the filter base. No big deal, right? After all, if you have to replace the filter you have to unscrew the base and then reinstall it. As a result the filter base “o-ring” would not seal properly resulting in a significant leak. (Just like the one negative review I previously read) I tried tightening and it appeared to only exasperate the problem even more. (Note the attached video) I then called Cascade Designs (aka MSRGEAR), explained the problem and submitted my video to them. They…
Catastrophic failure of two MSR Guardians 10 days into trip. We took two Guardians on a canoeing trip down the R Nahanni in NW Territories as we were assured by all MSR’s information and various retailers’ advice that it would be the best purifier bar none. We checked carefully that the Guardian would be able to deal with glacial silt in the river and were unhesitatingly reassured that it would be no problem, as MSR advertise. Considering the high cost of these devices compared to the alternatives this constituted a significant investment for us. For the first ten days the purifiers worked as expected though the throughput did decline from 25s/litre to about 40s. However, on day 10 one Guardian sheared it’s pin-piston attachment (as has been reported by other purchasers on MSR’s site) rendering it unusable and unrepairable. The next morning exactly the same failure occurred to the other purifier leaving us in a difficult position with significant distance yet to travel. The pin-piston attachment point is subject to very heavy loading due to…
Love It!! Purchased this pump after much research. I have been using the MSR Miniworks for years and have loved it. Hike a lot in Hoosier National Forest and pump from lakes and ponds when streams go under ground. The miniworks worked but had to be cleaned every 28-29 strokes due to sediment. I have used the Guardian on two trips since the 1st of Dec (2016) in the same lake and pond. WOW!! First time in 20 to 30° temperatures and I pumped and filled a 48 ounce Nalgene bottle in the time it took my Miniworks to fill about 8-10 ozs ( then had to be taken apart and cleaned). Just used it the past two days and woke up to -1°F and did not stick the Guardian in my sleeping bag like I would’ve the Miniworks and it was a block of ice, nothing would function or move on the pump. Stuck it between my layered clothing while cooking breakfast and it worked better than great. My brother had just purchased another expensive brand and he couldn’t get it to thaw even after sitting it next to the fire. My…