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Sawyer Products SP194 Two Bag Complete Water Purifier System, 4 Liters Each

4.6 out of 5 stars 46 customer reviews
| 9 answered questions

List Price: $219.99
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  • .02 micron absolute hollow fiber membrane purifier
  • Removes 99.997% of viruses, 99.99999% of bacteria, and 99.9999% of protozoa/cysts
  • Housing material made from food grade ABS plastic is light in weight 17 ounces dry and easy to field maintain
  • No residual chemical taste
  • Backed by manufacturer's lifetime limited warranty
9 new from $179.94 2 used from $159.07
$187.14 & FREE Shipping. Details Only 2 left in stock. Sold by Avalanche Brands and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Sawyer Products SP194 Two Bag Complete Water Purifier System, 4 Liters Each
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  • Sawyer Products SP191 Point Zero Two Bucket Purifier Assembly Kit with Faucet Adapter
Total price: $311.09
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Technical Details


Product Description

Sawyer’s 4-liter dual bag portable ultra purification system physically removes viruses from water. This system allows you to effortlessly purify 4 liters of water in as little as 10 minutes. Use this system for one person or a group of people. The convenient bag to bag gravity system doesn’t require any pumping. Simply fill up the grey reservoir with unfiltered water, attach the filter and tube to the clean blue reservoir and gravity does the rest. Once the blue reservoir is full hang by its handle to fill water bottles, containers, and pots and pans from the high flow .5 liters per minute dispensing cap. Bladders are 20-inches x 10-inches each. Included in the system is a drink tube for attaching to the bite valve of your choice (sold separately) so that you can use the reservoir as you would any hydration system. Perfect for hunting, camping, fishing, disaster relief and emergency preparedness kits or on adventure travel where potable tap and bottled water are not easily carried or safe to drink.

Product Details

  • Product Dimensions: 9.8 x 3.5 x 14.5 inches
  • Shipping Weight: 1.6 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item can be shipped to select countries outside of the U.S. Learn More
  • ASIN: B001CA9PQW
  • Item model number: SP194
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (46 customer reviews)
  • Amazon Best Sellers Rank: #108,732 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • Product Warranty: For warranty information about this product, please click here

Customer Reviews

Top Customer Reviews

The Sawyer 4 Liter Complete Water Filtration System is overall a great system. I just set it up a few hours ago and tested it with my water hose. I saw particulate going into the filter, it was crystal clear coming out. (I know I shouldn't always expect clear water, but I should always expect clean water.) It's easy enough to set up, I just have a few minor modifications that I would make to make it easier to "use."

The tube connecting the grey bag to the filter is very long, but it's also an easy fix: I'll probably end up cutting and reattaching it.. Right now I have the grey bag for dirty water hanging from a limb about 7' off the ground, and with everything connected the blue bag for clean water is touching the ground. On the plus side, you have plenty of tube to work with if you need to!

I'm not sure if the whole system is meant to hang as one piece, but that's how I set it up and I feel like having a whole 4 liters of water pulling on all the hoses and connections can't be a good thing. Sawyer provides one strap to hang the system, I wish they provided two, the second one being much longer so one can hang the blue bag lower than the grey bag without putting all the weight on the hoses and filter. But again, this is an easy fix: I just used an extra lashing strap I had laying around.

The flow rate... Meh, I guess it could filter 4 liters in 15 minutes. Mine started really slow, but fortunately I had looked over the directions beforehand and remembered that it had said something about "air locks" in the system. So I fiddled around and disconnected some hoses to release the air and eventually everything sped up nicely. I'm sure once I learn how to effectively get the air out of the filter that it'll do 4 in 15.

The water does have a plastic taste upon first usage but I don't care. Overall I'd recommend it.
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I almost bought the platypus but being it doesn't filter viruses, I fortunately found the Sawyer .02 filter. Lifetime filter guaranteed (million gallon). Fill and hang, gravity does all the work. However Moontrail sells this for $163.00 so get it from them. This compacts well and is light!
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Let me start by saying I absolutely enjoy this product. It performs as advertised (minus a few minutes in my case, more later) and I believe it is worth the money I have invested.

For the cons:

The filter seems to be fragile and unsupported externally.In the instructions it states that you can not let the filter freeze. I understand that and understand why you can't. I do think that the company could have supported the filter better than seemingly a plastic housing. I assume they did this for the weight factor and this particular system is one of the heaviest out there. For me, on this item in my bag, I do not care about weight as much as durability. The system seems robust in most ways but I believe the fatal flaw is the filter durability.

The system, out of the box, flowed slower with well water than advertised. I timed three consecutive filters of the 4 litter bags with tap water alone and they were almost double the time advertised (yes I followed the instructions of priming the unit to the exact instructions). This does not make a difference to me as I plan on setting-and-forgetting it while I tend to other things in camp but I do worry that the filtration will slow even more over time.

For the pro's:

I could sum everything up by saying "massive options" but what fun would that be?

Some say this is one of the heaviest systems out there but I like to think of the things I would not have on the trip. I would not have the dirty bag and an extra tube going to the filter. Everything else I would have in my bag. I would have the clean bag, a water filter, and a hose going from the filter to the clean bag in any system I would backpack with. In my opinion, this gives me many options as well. What if my clean bag broke?
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Quite simply the best all around water purifier I've ever had. Very easy to connect and use; and very portable for backpacks. I will use this at home; pack in a suitcase for hotels; and take camping. This is also an excellent filter to have on hand for emergency preparedness. It's very well constructed and looks like it will hold up well. FedEx messed up my shippment, so I had opportunity to experience Sawyer's customer service. Refreshingly outstanding.

If you read the brief instructions that come with the unit, it states that some parts may vary from the diagram. They incorporate suggestions from their customers, make product modifications, but apparently don't always update their instructions. I experienced this, but the changes were so minor and connecting the parts is so intuitive that it really does not matter. I couldn't be more pleased with this purchase.
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I purchased this purifier with a little intrepidation...I doubted it would perform as well as advertised but trusted Amazon to back my satisfaction (Which it did...thanx Amazon!).

Spent a week in the BWCA in northern MN and after a couple times running lake water thru, the filter began to get really slow and it was hard to backflow properly in the field. I ended up leaving it for hours to get my 4 liters of water. I even attempted to backlow it after every 4 liters from the start! Good thing we also had a couple of pumps.

If there was a way to pre-filter the water maybe it would be more effective. The bags and filter cartridge tend to be pretty bulky as well.

On the plus side it does claim to filter out viruses! No proof of that though as none of my party got sick from drinking pump filtered water.
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