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  • Sawyer SP121 Just Drink Inline Water Filter (Discontinued by Manufacturer)
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Sawyer SP121 Just Drink Inline Water Filter (Discontinued by Manufacturer)

by Sawyer

List Price: $59.99
Price: $49.99 & FREE Shipping
You Save: $10.00 (17%)
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  • Biological Filtration: Sawyer Water Filters offer the highest level of biological filtration
  • Removal rates: (7 Log Bacteria 99.99999-percent, 6 Log Protozoa & Cysts 99.9999-percent)
  • 1 Million Gallons Guaranteed
  • 0.1 Micron absolute hollow fiber membrane inline filter
  • Use with a pump to prefilter, on a faucet adapter or inline in a hydration pack
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Frequently Bought Together

Sawyer SP121 Just Drink Inline Water Filter (Discontinued by Manufacturer) + Sawyer Products SP191 Point Zero Two Bucket Purifier Assembly Kit with Faucet Adapter
Price for both: $176.13

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Product Details

  • Product Dimensions: 6 x 10 x 3 inches
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B001C4C7KE
  • Item model number: SP121
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (19 customer reviews)
  • Amazon Best Sellers Rank: #86,794 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)

Product Description

Includes: 1-Inline Water Filter, 1-Faucet Adapter, 1-Hydration Pack Assembly Kit, Cleaning and Maintenance Instructions. Filter Weighs only 1.8-ounces. This filter accessory allows you to connect your inline filter to most water taps. The adapter head is made of flexible PVC which allows connecting to different size faucet mounts. Great for traveling, camping, or for emergency situations when you’re not sure if the water is safe to drink. 1 Million Gallons Guaranteed We didn’t actually run a million gallons through the filter because that’s a lot of water. But we could have. We are confident in our million gallon claim because you can continually clean the filter by back washing it with clean water. So there really is no end to its useful life. That is why we can GUARANTEE THE FILTER FOR LIFE as long as you follow the simple care and use instructions. Follow the helpful hints included in the directions for use. Back washing is not required often unless you are filtering very turbid water. Back washing only takes a few seconds. If you are accustomed to a ceramic filter, the leaning ratio is approximately 0:1. In other words, by the 20th time you would have cleaned your ceramic filter, it would be time to back wash this filter for the first time. NO REPLACEMENT FILTERS OR CARTRIDGES ARE NECESSARY. We trust you will thoroughly enjoy the ease and extra protection this proven next generation technology offers you. The Sawyer Water Filters feature a 0.1 Micron Absolute Hollow Fiber Membrane which uses medical technology developed from kidney dialysis. When the water is drawn through the filter it flows through the side walls of the Hollow Fiber tubes. Sediment, bacteria, protozoa, cysts, and other contaminants are filtered out exceeding all applicable EPA recommendations. No Pumping, No Chemicals, No Waiting and No Worries.


Customer Questions & Answers

Customer Reviews

4.3 out of 5 stars
5 star
14
4 star
2
3 star
0
2 star
1
1 star
2
See all 19 customer reviews
The same filter can be hooked up multiple ways.
Mountain Medic
SP121 manufacturer will not stand behind their products and offer you any support, Katadyn however is well known for good support.
Chris F
We enjoyed clean water, from sources that were less than optimum.
S. Lippincott

Most Helpful Customer Reviews

36 of 37 people found the following review helpful By Mountain Medic on August 26, 2009
Okay. This thing is plain awesome!
Filter rate is okay, medium drip rate but better than most mini pump filters.

What makes this really cool is the size and versatility.
The same filter can be hooked up multiple ways.
Put a straw on both ends and drink from a stream.
Connect it mid-line to a Camelback or between two bags and have a gravity filter.
(Make the top bag a Shower bag and have a huge filter that can provide water for the whole camp.)
Use the 'flush' adapter to purify water directly from the tap when traveling overseas!
Drill a hole in a 5 gal bucket (Sawyer sells the Kit) and make a bucket/ gravity filter. (Sawyer has a program in Africa using this system providing clean water for whole villages!)
I have a Sawyer Filter with the quick releases and swap it back and forth between 3 backpacks, faucet filter my (creek pumped) water, as an emergency filter using the bucket system. In my ultra-light day pack I have a small platypus bag with the Sawyer inline filtering, and some emergency supplies. On day hikes I just stop and fill from whatever creek or puddle and keep moving.

ONE filter for day hikes, long hikes, thru hikes, group expedition and disaster/ earthquakes...
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15 of 16 people found the following review helpful By S. Lippincott on August 21, 2010
Verified Purchase
This filter is a life saver. It worked great on our most recent backpacking trip, where water was scarce. I am very pleased with this product. I used it in-line with Cyclone hydration bladders from a local Wal-mart, and it performed very well. We enjoyed clean water, from sources that were less than optimum. It is WAY BETTER than boiling, or using chemicals for purifying.

If anyone wants to help people in Pakistan, or other places experiencing clean water issues, this would be a great product to help.
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9 of 9 people found the following review helpful By Mark on June 18, 2012
Verified Purchase
I've been backpacking for almost three decades now and used many popular purification systems including the MSR WaterWorks, First Need, iodine tablets, chlorine tablets, and the Steri-pen. When I installed the Sawyer inline filter I was a bit concerned about how difficult it would make drinking from my camelbak and initially it seemed like my fears were realized. However, after a stream-side fill up on the trail I realized that the hose was kinked and that was what was causing the resistance, not the filter. It was an easy fix and that's when the real appreciation started. I found myself carrying less water since I was traveling in country with lots of streams. I could open my camelbak, scoop in a quart with my cooking pot, close it back up and be on the trail. No pumping, no waiting for chemicals to kick in, and no chemical taste. When I stopped for the night and needed water to cook with I just removed the bladder from my pack, put it in a tree, removed the bite valved and in under 90 seconds had a pan full of water.

While I've only used this filter on one three day trip, the light weight, convenience, and functionality have me convinced I've been doing it wrong for years. The Sawyer inline filter is the way forward. I simply can't see a downside to it.

UPDATE: I used this filter all summer on dozens of hikes and highly recommend it. Despite one or two rather sketchy water sources, I didn't get sick once. Used with the newer camelbaks in line, you can change from an unfiltered hose to a filtered hose easily when you leave home with clean water, but find the need for a filter while traveling.
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10 of 10 people found the following review helpful By Pink Samurai on March 15, 2011
My friend used one of these to make a gravity filter...he connected it with tubing to a waterproof bag. I was high up in the mountains, and just filled the bag up with stream water and it filtered great. Didn't get sick. Water tasted nice and clean. I was so stoked on it, I'm going to buy one for myself!!!
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4 of 4 people found the following review helpful By Outdoors is where to be on April 2, 2011
Verified Purchase
Not really sure what to say about this product other than it seems to work fine in certain settings. I still need to test this out when I go camping and find out all the methods that can be used with this product (with rivers, or the use of a camping shower bag and gravity with the sun hitting down on it etc). I do notice a difference in the taste of water, and it comes out way cleaner tasting than city water of course. I do wish it filtered out viruses, but that filter cost an additional $40 dollars, you can always boil water which I recommend any ways when it comes to emergencies. I have done research on water filters and this one is in the top picks, and it is being used in parts of Africa, so I would say that you can count on this unit. I give this unit a 5 star because I am basing it on its previous reviews, and some of my experience with it.
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3 of 3 people found the following review helpful By S., on July 1, 2013
Verified Purchase
Tried it on my tap water and it took the Chlorine taste and smell out. Worth buying I think, can't beat the price for the gallons it filters.
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3 of 3 people found the following review helpful By James Six on December 27, 2011
Verified Purchase
This is my go-to filter for water on the trail. Its so easy compared to working with a canister filter or any other method, a real joy to have on the trail, just fill up the bladder and you're rolling along. Clean up is easy, just backwash it. Definitely recommend for ease of use.
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2 of 2 people found the following review helpful By D. Kozdras on May 2, 2012
Verified Purchase
I installed this filter in line on my 3 liter CamelBak bladder. I took this on my Smokey Mountain hike with the bladder in my back pack. The water drew easily through the filter and tasted fine. Because the filter was in line, I could easily dip my bladder into whatever water source was available and be back on my way without having to deal with the extra time and weight of pump style filters. In camp I hung the bladder up to use as gravity fed water source. This is a great product.

20 June 2013 - update - I wont change the rating because it was my fault. You absolutely have to backflush and clean your filter after each use or you will get build-up that you will not be able to flush out at all rendering your filter useless. mine is ruined.
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