REI.com
  • Online: www.REI.com
  • URL for this product:
  • From the U.S. and CanadaCall 1-800-426-4840
  • Mon. through Sun., 4 a.m. through 11 p.m. PT.
  • InternationalCall 1-253-891-2500
  • Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.
First Need XL Water Purifier

    First Need XL Water Purifier

    • $115.00
    (65)

    Item # 767831

    `
    Product size and color

    This item may be available in your local REI store.

    This item ships for free! Learn more

    To view videos or use the zoom feature on REI's websites, please download the latest version of Adobe Flash Player.
    _

    • NOW PLAYING

    The First Need XL water purifier delivers convenient chemical-free water purification for outdoor adventures and international travel.

    • Structured Matrix 3-stage purification technology provides natural and ecological removal of contaminants down to 0.1 micron nominal (0.4 absolute)
    • Purifier is certified to EPA Guide Standard for microbiological purifiers against bacteria, cysts and viruses; removes giardia and cryptosporidia
    • Also removes dirt, unpleasant tastes and chemicals such as pesticides and herbicides
    • Easy-grip, ergonomic handle provides comfortable pumping; double-action pump is field serviceable
    • Use the included gravity feed kit for hands-free purification without pumping
    • Fast flow rate of 1.89 liters per min. lets you enjoy clean, great-tasting water in no time at all
    • XL purifier's large capacity lets you purify up to 150 gal. before needing to replace the canister
    • Direct Connect attaches unit snugly to many wide-mouth and narrow-mouth water bottles and hydration systems, sold separately
    • Attach the drink tube on your Camelbak® hydration reservoir directly to canister so you can refill without removing the reservoir from your bag
    • Additional adapters (sold separately) allow attachment to directly to select Platypus, Sigg and Nalgene water bottles and reservoirs, sold separately
    • Included prefilter removes larger contaminants before they reach the purifier; adjustable float lets you position the prefilter exactly where you want it
    • 36 in. long inlet hose provides consistent flow and won't kink
    • Excellent impact resistance withstands use in the wilderness and during international travel
    • First Need XL water purifer includes a lightweight storage bag
    • 16 oz. weight includes filter canister (does not include storage bag)

    Made in USA.

    Item 767831

    REI Membership

    Related items

    First Need XL Water Purifier Specs
    Specification
    Description
    Best use
    Backpacking
    Pump
    Structured matrix micro-strainer
    Protozoa, bacteria and viruses
    Unavailable
    Unavailable
    1.89 liters per minute
    Polypropylene
    No
    6.25 x 4.9 x 2.8 inches
    16 ounces
    Filter type
    Filter medium
    Removes/Destroys
    Pump force
    Pump strokes per liter
    Output
    Housing material
    Field cleanable
    Dimensions
    Weight

    First Need XL Water Purifier Customer Reviews

    REVIEW SNAPSHOT®

    by PowerReviews
    First Need XL Water Purifier
     
    4.2

    (based on 65 reviews)

    89%

    of respondents would recommend this to a friend.

    Pros

    • Good filtration (54)
    • Easy to pump (52)
    • Easy to clean (36)
    • Maintenance (35)
    • Lightweight (17)

    Cons

    • Heavy / bulky (30)
    • Hard to clean (7)
    • Hard to pump (3)

    Best Uses

    • Backpacking (57)
    • Hiking (36)
    • Day trip (28)
    • Car camping (26)
    • Travel (3)
      • Reviewer Profile:
      • Avid adventurer (44), Casual/ recreational (13), Casual adventurer (5)
      • Was this a gift?:
      • No (20)

    Reviewed by 65 customers

    Sort by

    Displaying reviews 1-10

    Back to top

    Previous | Next »

    (92 of 95 customers found this review helpful)

     
    5.0

    I've tested this in a lab

    By Carew

    from ABQ, NM

    About Me Avid Adventurer

    See all my reviews

    Site Member

    Pros

    • Easy to pump
    • Good filtration
    • Low maintenance
    • Virus removal

    Cons

    • Bulky
    • Pricey

    Best Uses

    • Backpacking
    • Car Camping
    • Day trip
    • Hiking

    Comments about First Need XL Water Purifier:

    If you go to the General Ecology website you can find a scientific paper written about this filter. It was written and tested by a limnologist out of U of AZ, Charles Gerba (my limnology professor from UNM actually knows him). It shows that this filtration system removes particles as small as polio and rota viruses (and does this to 99.9999% even after the filter had run more then 90 gallons through it and the water had stagnated 48 hours). In my Limnology 496 Lab it even showed to effectively lower inorganic chemicals such as nitrate and sulfate. I highly recommend this system and if I can't convince you read the paper online (its a simple read too). The best aspect being that there aren't any chemicals involved and the water always tastes crisp.

    (45 of 45 customers found this review helpful)

     
    5.0

    You need THIS PRE-FILTER TRICK

    By ScotMaster

    from Monterey Bay, Ca

    About Me Outdoor Professional

    See all my reviews

    Site Member

    Pros

    • Easy to clean
    • Easy to pump
    • Good filtration
    • Lightweight

    Cons

      Best Uses

      • Backpacking

      Comments about First Need XL Water Purifier:

      Excellent purifier for those of us who would really prefer to hike out in comfort, rather than crawl out with stomach cramps, etc. EXCELLENT TRICK to extend useful life of filter and maintain super ease of pumping effort: add an MSR SiltStopper (REI Item # 611748) in-line just after the included First Need pre-filter, and carry extra MSR SiltStopper Replacement filters (REI Item # 611750). I scrape the MSR prefilter paper cartridge lightly with my finger nail every couple of gallons to remove just the outer layer of stained paper, and find that my First Need purifier cartridge lasts easily a full year or two of heavy use and pumping effort remains factory new the entire time, WITHOUT ever needing to backflush. I usually replace the MSR paper prefilter after every trip or two on general principles because of the low cost, or once pumping effort begins to lag, or after using super muddy pig wallow water (remember, this is a PURIFIER, so any water is fair game!).

      So: First Need factory prefilter; then an inch or so of tubing; then MSR prefilter; then rest of tubing up to First Need purifier.

      That said, without this prefilter trick, I'd clog up after a few days, you just can't have super fine micron filtration and purification without clogs. Still usable mind you, but sooo slow to pump the frustration level wasn't worth it. Now, with the prefilter trick, I carry this purifier everywhere, gladly lug the 180z my full kit weighs, and can confidently use ANY water source available with ease, as the only purifier for groups from four to fourteen, two days to two weeks. I've become so (over)confident in my prefilter enhanced system that I've stopped carrying an extra First Need as a backup, something that will bite me one of these days I'm sure......

      Happy Trails to All.

      (38 of 40 customers found this review helpful)

       
      4.0

      Great filter BUT...

      By alexwood

      from Temecula, Ca

      About Me Casual/ Recreational

      See all my reviews

      Pros

      • Easy to clean
      • Easy to pump
      • Good filtration
      • Lightweight
      • Screws on to Nalgene

      Cons

      • Filter is expensive
      • The filter clogs easily

      Best Uses

      • Backpacking
      • Hiking

      Comments about First Need XL Water Purifier:

      I have had this filter for a long time now, and it works great....that is if you clean it (backwash it) regularly....When I first got this filter, I didn't know about that, and if you don't do that, the filter will slowly start to not pump and it will presurize and the tube that transfers from the filter to the pump will shoot off becuase of the pressure... So, great filter, just be sure to backwash it as often as the directions tell you too.. and when backpacking, be sure to empty all the water out of it otherwise you carrying extra water....Also, the water from this filter tastes great!

      (35 of 35 customers found this review helpful)

       
      5.0

      Worth every ounce to carry on long treks

      By Khaosanrd007

      from Arcadia, CA

      About Me Avid Adventurer

      See all my reviews

      Pros

      • Easy to clean
      • Easy to pump
      • Good filtration
      • Lightweight
      • Low maintenance

      Cons

        Best Uses

        • Backpacking
        • Car Camping
        • Day trip
        • Hiking

        Comments about First Need XL Water Purifier:

        Just got back from 6 weeks in Africa. Climbed Mt Kilimanjaro, and treked though five other East African countries. The First Need XL paid for itself on the very first day of climbing Kili. This water purifier was invaluable. This pump ended up filtering water everyday for every climber in my group. And there were eight of us total. It was easy and quick to use. The water tasted great, and was able to filter anything that came our way. This was one of the best investments I made for hiking/treking. I would highly recommend this unit for anyone thinking about buying a filter. With the amount of water that we were filtering on a daily basis, there is no way one of the handheld pens could have gotten the job done. Save your money, don't buy a pen.

        (34 of 39 customers found this review helpful)

         
        5.0

        Best of the best

        By lakewood

        from NYC

        About Me Avid Adventurer

        See all my reviews

        Site Member

        Pros

        • Easy to clean
        • Easy to pump
        • Good filtration
        • Lifesaver
        • Lightweight
        • Low maintenance

        Cons

        • Not for the ultralight

        Best Uses

        • Backpacking
        • Car Camping
        • Day trip
        • Disaster Survival
        • Hiking

        Comments about First Need XL Water Purifier:

        This is the best worry free purifier that there is, just, as with any filter, carry a extra cartridge and a small bottle of bleach to backwash.
        But this is with any filter that requires a back wash, always use a pure water source and a few drops of bleach to backwash. It is just common sense.
        This is one of the few filters I recommend when I teach urban disaster survival.

        (27 of 27 customers found this review helpful)

         
        5.0

        Best purifier hands down.

        By bipod

        from Virginia

        About Me Avid Adventurer

        See all my reviews

        Site Member

        Pros

        • Easy to clean
        • Easy to pump
        • Good filtration
        • Lightweight
        • Low maintenance

        Cons

        • Bulky

        Best Uses

        • Backpacking
        • Car Camping
        • Day trip
        • Hiking
        • Overseas travel

        Comments about First Need XL Water Purifier:

        I've had my original First Need for over 12+ years. It's rugged, reliable, easy to maintain and has yet to let me down. For those who had issues with clogging much of that can be avoided by finding clearer running areas of water to draw from but with the prefilter on, unless you're sucking from mud silty water shouldn't be an issue. To maintain my First Need all these years I be sure I backwash the filter at least twice a season w/ a bleach solution and clean the outside after returning home from every trip. If you maintain this system it should last as long if not longer. I've replaced the filter two times in 12+ years. One of which was after filtering one of the worst water sources I've ever pumped from and that was after a 5-day trip pumping for two people. Gatorade yellow water came out crystal clear, fresh and cold. No sickness, nothing. But at the end of the trip even a backwash wouldn't help the filter so I replaced it, the other was after 6+ years of use and abuse. Needless to say, I recommend the First Need to any serious outdoor person who doesn't want limitations to what or where they pump either here in the States or abroad. My one grip is I wish it were more compact but that's it.

        • Gift:
        • No

        (26 of 30 customers found this review helpful)

         
        5.0

        Excellent Product

        By 10missiontrip

        from Phoenix, Az

        About Me Casual/ Recreational

        See all my reviews

        Pros

        • Best with gravity filtrat
        • Easy to clean
        • Easy to pump
        • Good filtration
        • Lightweight
        • Low maintenance
        • Very effective

        Cons

          Best Uses

          • Overseas source of water

          Comments about First Need XL Water Purifier:

          We bought our first need 6 years ago and have used it in 9 foreign travel assignments. Not once have we gotten any illness from the water filtered by our First Need pump. Our trips have been to Africa, Philippines, Inter-America, and Nepal, so there have been plenty of possibilities for infection from water. Not a single one.

          (23 of 23 customers found this review helpful)

           
          5.0

          Still the best

          By John F

          from Maryland

          About Me Avid Adventurer

          See all my reviews

          Site Member

          Pros

          • Easy to clean
          • Easy to pump
          • Filters viruses
          • Good filtration
          • Low maintenance

          Cons

          • Bulky

          Best Uses

          • Backpacking
          • Car Camping
          • Day trip
          • Hiking

          Comments about First Need XL Water Purifier:

          There are other purifers and filters out there that are smaller, lighter, slimmer, and cooler-looking than the First Need, but this is still hands-down the best one for the money. It will easily and quickly pump a large volume of water on both the up and down strokes, and unlike most other packable filters it removes viruses. Another plus is that it's a water purifer, so there's no funky aftertaste that you sometimes get from filters using chlorine. It's not really field-cleanable as some other filters are, although a quick backwash will work to clear most clogs. No other filter at this price combines all of the performance features of the First Need.[...]

          (19 of 19 customers found this review helpful)

           
          4.0

          Great Purifier

          By Scouter Zach

          from Hayward, CA

          About Me Casual/ Recreational

          See all my reviews

          Site Member

          Pros

          • Easy to pump
          • Good filtration

          Cons

          • Bulky
          • Fliter is expensive
          • Hard to Clean

          Best Uses

          • Backpacking
          • Day trip
          • Hiking

          Comments about First Need XL Water Purifier:

          This has been a great filter / purifier overall. It's very easy to use - especially is you have a large mouth Nalgene. It's easy to pump, and the best feature is that there is water flow with the up stroke AND down stroke.

          Big Down side is no matter how often you back flush, filter only seems to last a year and the oly thing to do is to replace the filter - which is a little expensive at over $40.00 per cartridge. besides this flaw, I haven't met a filter/purifier that matches it yet.

          (18 of 20 customers found this review helpful)

           
          5.0

          No more chemicals in my water!

          By bcdp6703

          from Santa Rosa, CA

          About Me Casual/ Recreational

          See all my reviews

          Site Member

          Pros

          • Easy to clean
          • Easy to pump
          • Good filtration
          • Lightweight
          • Low maintenance

          Cons

            Best Uses

            • Backpacking
            • Car Camping
            • Day trip

            Comments about First Need XL Water Purifier:

            This water filter is great! The First Need XL has a small footprint, allowing it to go along on backpacks or long day hikes. The pump action is very efficient and it is great how the bottom of the filter canister fits directly on water bottles. On backpack trips of a few days I formerly used chemical treatment (followed by a clearing agent). First Need has changed that since it is so easy to pull out and refill water bottles while on the trail. The purified water tastes great!

            Displaying reviews 1-10

            Back to top

            Previous | Next »

            How are we doing? Give us feedback on this page.

            FREE U.S. STANDARD SHIPPING on orders of $50 or more.

            • Join REI today!
            • REI Membership
            • REI member benefits include an annual refund (typically 10% on eligible purchases).
            • Join REI today!
            • Sign up for REI Gearmail®
            • and get 15% off selected items!
            • Store Locator
            • Locate an REI store near you.
            • Find a Store

            Find REI on: FacebookTwitterYouTubeFlickr