One of the few pumps that filters viruses, and the only that filters radiological contamination. Skip this model unless you very specifically care about radiological threats. Originally designed for the US army, theMSR Guardian is among the best survival filters of any style available on the market — with a $350 worth to match — and is among the few pumps that filters out viruses. We even determined to place one in our personal provides after this evaluate, complimenting the smaller, more portable choices in our go bags.

We dislike the mouthpiece tube, because it appears flimsy and there are stories of mildew progress and leaks. We also dislike the way in which the filter hangs contained in the bottle. Unique 13.5 oz rigid bottle with built-in pump to pressurize water by way of the filter, making it easier to attract. Versatile because you possibly can swap between fundamental Green and virus-rated Red filters. Only filters 25 gallons of water because it’s a very beefy filter that covers radiological threats.

The tiny 0.02 micron hole-fiber filter lasts for 10,000 L . It’s hefty at 17.3 oz and 8.25” long but not enough to really feel unreasonable.

Comes with small compass built-in in cap and a cheap paracord bracelet and flint. Popular and nicely-reviewed, but we predict it’s only desirable for trendy everyday carry. Smaller bottle, partly due to a design that makes use of a unique “french press” movement as a substitute of filtering as you suck water out. Innovative, but we've considerations about this design in an emergency context and reports of leaks and cross-contamination enhance our suspicion. Berkey is a well-known water firm, but this product is a miss and perhaps white-labeled from a less expensive producer.

If you care more about product high quality over virus protection, we like the Katadyn Hiker Proat ~$eighty. Its zero.2 micron glass-fiber/carbon filter lasts for 1,135 L . The eleven oz weight and 6” length is about middle of the highway for this class. The main profit over the bottom Katadyn Hiker mannequin is the fast-disconnect hose attachments and better pre-filter, that are worthwhile upgrades and cut back potential issues. Uses the identical filter as the bottom Hiker, but is ready to handle extra sediment in the water and thus lasts longer.

Better general than the direct competitorMSR MiniWorks EX, although the EX does have limited steel/chemical safety. Many pumps use ceramic for his or her filters, a naturally porous materials that traps particulates.

Unlike membrane-primarily based filters that use backflushing to clean out the trapped particles, ceramic filters are scrubbed down by hand with a brush or fabric. It’s simple to do and has some advantages, similar to visibly seeing how much life the ceramic has left and you don’t need a backflush syringe. White-labeled product, similar because the FilterOne etc options in this record. We’re skeptical of the zero.01 micron filter declare, and the product info is inconsistent about virus protection. But there are larger-than-normal stories of difficulty sucking water via, which is typical of a smaller-pore filter.

Only think about this should you’re particularly excited about nuclear preps. This is a unique equipment that we weren’t positive the way to categorize, but Sagan calls it a straw, so right here it's. It could be a straw in that you simply dip a long hose into your supply and draw water via the opposite finish together with your mouth. But it additionally has a hand pump bulb , so you can squeeze as a substitute of suck, which also makes it usable as a shower and gear cleaner.