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The Sweetwater Microfilter eliminates over 99.9999% of all waterborne bacteria and 99.9% of parasites. Fast and easy to use, the Sweetwater Microfilter pumps more than 1 liter per minute, and simple brushing restores flow when clogged.
Lightweight and compact, the SweetWater® Microfilter makes water filtration fast and easy.
This description was also provided by: USOutdoor.com
SweetWater Microfilter
Lightweight and compact, the SweetWater Microfilter makes water filtration fast and easy.
* Fast
Pumps water on both up and down strokes for a fast flow rate of 1.25 liters per minute.
* Easy to Use
Unique lever-action pump handle has a 4-to-1 mechanical advantage, so you dont have to work as hard.
* Lightweight
Weighing just 11 oz., its one of the lightest filters on the market.
* Compact
Handle folds flat when not in use for easy packing and storage.
* Dependable
Eliminates over 99.9999% of all waterborne bacteria and 99.9% of common protozoan parasites, such as giardia and cryptosporidia.
* Simple to Maintain
Simple brushing will restore a clogged filter, and the pump lets you know when the filter needs replacing (each cartridge filters up to 200 gallons of water).
Accessories Include: an 80-micron stainless-steel prefilter, two color-coded silicone hoses, foam float, water bottle adapter, cleaning brush, and carry bag
Weight: 11oz/320g
Size: 7.5x2in/19x5cm
Getting clean water doesn't mean wearing yourself out - MSR's SweetWater Microfilter draws water through a carbon microfilter on both the up and down strokes. By filtering protozoa, bacteria, and particulates out of up to 200 gallons, you'll stay safely hydrated throughout your trip.
The MSR SweetWater Microfilter removes waterborn bacteria and protosoan parisites including giardia and cryptosporidi. The lever-action handle has a 4-to-1 mechanical advantage and folds flat for easy storage. Being manufactured by MSR it is completely field-maintainable and quick and easy to clean with simple brushing. The Filter Replacement Safety Indicator becomes visible when it's time to replace the filter cartridge. Features:
The MSR SweetWater Microfilter gives you a fast, dependable way to filter your water, and only adds 11 ounces to your backpack. This MSR water filter's lever-action pumps water on both up and down strokes for a fast 1.25-liters-per-minute flow rate, and the filter eliminates 99.99% of all waterborne bacteria and common protozoan parasites like giardia and cryptosporidia. Simple brushing restores a clogged filter, and the pump lets you know when the filter needs replacing. Fold the handle down and slip the 7.5 x 2in SweetWater Microfilter into the included stuff sack. *Also includes 80-micron stainless steel prefilter, color-coded silicone hoses, foam float, water bottle adapter, and cleaning brush.
The MSR SweetWater Microfilter gives you a fast, dependable way to filter your water, and only adds 11 ounces to your backpack. This MSR water filter's lever-action pumps water on both up and down strokes for a fast 1.25-liters-per-minute flow rate, and the filter eliminates 99.99% of all waterborne bacteria and common protozoan parasites like giardia and cryptosporidia. Simple brushing restores a clogged filter, and the pump lets you know when the filter needs replacing. Fold the handle down and slip the 7.5 x 2in SweetWater Microfilter into the included stuff sack. Also includes 80-micron stainless steel prefilter, color-coded silicone hoses, foam flat, water bottle adapter, and cleaning brush.
MSR SweetWater Microfilter is a compact, lightweight, and durable water filter suitable for light to moderate use
4:1 mechanical advantage means efficient pumping and produces 1.25L per minute
Filter can be easily cleaned in the field without tools to restore flow rates
Effective protection removes bacteria, protozoa - including crypto and giardia, and particulates
Weight: 11 oz. or 320g
Dimensions: 7.5 x 2 in. or 19 x 5 cm
Cartridge Life: Up to 750 liters, depending on water conditions
Includes: SweetWater microfilter, 80-micron stainless-steel prefilter, 2 color-coded silicone hoses, foam float, water bottle adapter, cleaning brush, and stuff sack
One of the easiest pumps to operate! Features dual-action draw and a mechanical advantage to supply you with clean water quickly.
No description provided.
| Adapter: | All MSR hydration bags, standard Nalgene water bottles |
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| Cartridge Life: | Up to 200G (760L) |
| Cleanable: | Yes |
| Dimensions: | 7.5 x 2 inches |
| Element pore size: | .2 micron |
| Field cleanable: | Yes |
| Filter Type: | Carbon cartridge |
| Filter element: | labyrinth with carbon |
| Filter medium: | Labyrinth w/carbon |
| Gravity Flow: | No |
| Housing material: | Polycarbonate |
| Manufacturer Warranty: | Lifetime |
| Output: | 1+ liters per minute |
| Output rate: | 1+ liters per minute |
| Pump force: | 1.6 pounds |
| Pump strokes per liter: | 82 |
| Recommended Use: | Backpacking, mountaineering, paddling trips |
| Removes: | Protozoa and bacteria |
| Weight: | 11 oz (320g) |
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View other products from MSR classified in Hiking & Camping > Water Treatment. View all products from MSR.
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Sometimes, we can't be sure that the product is the same across the stores that offer its, so you may find the same product listed more then once on GearBuyer.com, we these list highly similar products below.
 | MSR SweetWater Filter Cartridge | $34.95 - $39.95 |
 | MSR Sweetwater Prefilter | $9.95 |
 | MSR SiltStopper Replacement Filters | $19.95 - $39.95 |
These are products that have been indicated being comparable to this product:
 | MSR SiltStopper Hiking & Camping > Water Treatment | $19.95 |
| MSR SweetWater Filter Cartridge Hiking & Camping > Water Treatment | $34.95 - $39.95 |
| MSR Sweetwater Prefilter Hiking & Camping > Hydration | $9.95 |
 | MSR SweetWater Purifier Solution Hiking & Camping > Water Treatment | $8.94 - $9.95 |
 | MSR SweetWater Purifier System Hiking & Camping > Water Treatment | $73.95 - $89.95 |
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I've trusted this filter for ages | |
| Rating: |  |
| I bought the sweetwater filter around 1984 when I was just a kid. I have used it only occasionally. I have only bothered to clean it a few times. I’ve been pretty hard on it by just dropping the 100 micro (75 microns now) pre-filter in to puddles of muddy water. It would get kind of gritty on the inside, but the filtered water was always clean. This past summer I added a silt stopper pre-filter and took it on a week long trip to the Boundary Waters in Minnesota. I’m not quite sure what went wrong, but the filter cartridge finally died on this trip. It started out by wasting lots of water out the pressure release valve, but I couldn’t get it apart to clean it. That was when I started noticing black rocks in the bottom of the Nalgene. I remembered that the filter had several stages. The pre-filter which is 100 (now 75 microns), the silt stopper which is about 5 microns, the filter (mine was 0.3 microns, but now they are 0.2 microns), and lastly a GAC filter (Granulated Activated Carbon, I think now it might be some sort of carbon impregnated cloth, mat, or block, I’ll have to cut one open). Anyway in my unit whatever was holding the GAC in place finally gave out, and the filter spit carbon granules for the rest of the trip. It was really not big deal, but I was used to nice clear fresh tasting water. Without the carbon, the water was a bit yellow and tasted like lake water. Shortly afterwards the silt stopper filter clogged with silt and algae. I still couldn’t pull the hoses off to take the unit apart for a cleaning, so I kept pumping. Then the filter started only pumping from one direction and very little water was coming out as the filter kept sucking the water back up on the down stroke. I looked over everything and saw that as I pumped the suction was great enough to cause the water to evaporate (boil) through the clogged silt stopper. I could see that the water was crystal clear just after the slit stopper, but it was still full of carbon rocks at the output. At this point I made a serious effort and popped all of the hoses off for inspection and cleaning. Inside the main filter cartridge was fine, so I tested it with some previously filtered water. It worked normally, so I tried to clean the silt stopper per the directions by connecting it up to the output to reverse the water flow. I used filtered water for cleaning, but the silt stopper split in two making it useless. Since the main cartridge was fine, I just left the slit stopper out and continued to use the filter. After all of this the filter worked just fine (nobody got sick), but without the GAC the water was a bit yellow and tasted like lake water. Even with all of the above, I plan to buy a new main cartridge and continue to carry this filter any time I go hiking, camping, canoeing, etc. I am still undecided about the stilt stopper, because I don’t know if it was age or the stilt stopper that messed up my main cartridge. Pros: This is a great filter and I was still able to trust it even after all the problems I was having. Cons: keeping track of all the hoses is a real pain, plus when pumping from the shore the float usually carries the pre-filter from deeper water toward you until the pre-filter is resting on the bottom. | |
| stancilmor at REI on 09/12/2007 | |
The best backpack filter I have used | |
| Rating: |  |
| I have owned four different backcountry water filters (This Sweetwater, MSR MiniWorks, Katadyn Hiker PRO, and the Aquamira Water Bottle) The Sweetwater is my pick of the litter. It provides the best combination of reliability, water throughput, ease of maintenance, filter size and ease of use that I have found. Here are a few tips to get the most out of your Sweetwater filter: Read the instructions that came with this filter. I know that most people feel emasculated if they actually have to read the manual, but it will really help you get the most out of this filter. That way you will know what to do when water starts squirting out of the side of your pump, or the best way to store the filter between trips so that it will work next time. Seriously, read the whole thing. If your filter seems to lose throughput, do a field cleaning using the included brush. If it gets clogged quickly, invest in the accessory MSR SweetWater Siltstopper (available from REI). This is a silt pre-filter that will keep your pump volume high for a longer period of time. People forget that even clear alpine lakes can have a high concentration of particulate matter that will quickly clog any small filter. Develop a cadence when pumping. The trick is to find the right rhythm to get the 1 liter per minute flow without over-stressing the pump, possibly breaking it. Don't be impatient. You are in the backcountry; You can slow things down. Cons: Nothing is perfect Set up time is longer than many other filters. Also, special care must be taken to keep the 'clean' and 'dirty' hoses separated to avoid contamination. It is helpful, but not required, to have a second person to hold the output onto the bottles. So, Once you set up, filter a enough water for the whole day. In summary: I have tried many filters and this one is my favorite. | |
| n2y2 at REI on 02/12/2008 | |
Man's best friend | |
| Rating: | |
| This was the first filter I ever bought and it will be the last one as well. I have had this filter for 9 years (I bought it when it was made by cascade designs under Sweet Water), it has never let me down! I have never bought a new filter cartridge and have used it to pump hundreds of gallons of water. I believe the key to this is the fact that I have always used the silt stopper. I have seen the silt stopper turn black with muck to the point that the filter would not pull water through and I thought that it was clogged. But simply replacing the silt stopper worked like a charm. I have filtered everything from stagnate water in Mexico, to brown coffee colored water in a stream. There is no after taste and the water is always clear and pure. I have never been sick from this filter. Once in the jungle in southern Mexico next to Guatemala I filtered water from a pool that our host had just washed his hands and knives which he just used to kill a turkey with. Of course I didn't know what was in the water when I brushed my teeth with it that night, and I poured it out after I did...But since it was filted through my filter I didn't get sick! This is tough and light weight little filter. All it requires is that you take reasonable care of it and keep it clean. Don't put it away wet and dirty or your water might taste a little funny next time. Other than that I have no gripes about this filter! | |
| okey from mskokey at REI on 10/27/2008 | |
Great Filter | |
| Rating: | |
| I've used it on many short and long term backpacking trips during the past 8 years, and overall have been very satisfied with it's use, with one exception. Occasionally it becomes very difficult to pump - collapsing the intake hose, even with the siltstopper attached. Hint - if you have problems like this, and have gone through the cleaning routine to no avail, there is one more trick. In addition to pumping a quart of water with 1 oz of chlorine bleach through the filter and letting it set for a day, do the same for the pre-filter! I simply put it in approximately 1 qt of water with an oz of bleach and let it sit for a day - began pumping fine again. Once I did the above, it has worked great! I now do this after every few trips, same as I do for the filter. | |
| PhilmontF at REI on 07/30/2008 | |
Flawless for a year now | |
| Rating: | |
| I have used this filter on all my backpacking trips in the last year or so, around 30 days total. I also use the paper prefilter. Isle Royale, Michigan UP, southern Illinois and New Mexico are places it has been used. All have water with high amounts of algae and silt except maybe NM. The filter has performed great! Replacing the prefilter and field cleaning on rare occasions has kept me with fresh great tasting water through all my trips. The filter gets cleaned after trips every time. Mine was purchased on the recommendation of a friend who has used his since they first came out. | |
| Ron. at REI on 01/29/2008 | |
Truster friend for years | |
| Rating: | |
| I've had the Sweetwater system for many, many, years (15 or more?) and it has been reliable, if not always perfect. Sure, it'll start to squirt out the top from time to time, but you have to clean it and pay attention to what the water quality is like. Here's a tip - glacial water is full of microscopic-particulates and will clog your filters fast. Here’s another one – Try digging a hole in a sandy area along side of a river and letting it fill with water. Pumping from this stilling well will filter out a lot of the suspended sediments that show up when pumping directly from a river. | |
| Geostuff at REI on 03/12/2008 | |
Best ever | |
| Rating: | |
| This filter is great. The only issue I have with it is that it takes a few minutes to get out of the bag and set up. But you have that issue with any filter. My folks got it for me before I left for Peace Corps in Latin America. I had a great filter for my home down there, but it worked flawlessly when I needed it while I was travelling and trekking. We bought some extra parts, but have never really needed them. I have had waterborne illnesses, but never from water I got out of this thing. | |
| mossrunner at REI on 12/04/2008 | |
Excellent Filter | |
| Rating: | |
I love my Sweetwater. I recently used it as the sole filter to support a 6 person party through Yosemite Valley, and another 4 person party through Desolation Wilderness. It's extremely light compared to the alternatives, packs relatively compactly, and most importantly, provides fresh tasting, easily pumped water. I have been careful and selective to pump from clear, fast moving water, and haven't even had it clog or need to be field serviced after pumping upwards of 60 liters over this past trip. To me, that's pretty stellar performance. I highly recommend this filter to anyone seeking a light, reliable, sturdy filter. | |
| Gabe H. at Backcountry.com | |
"Field maintainable, fairly light, etc. etc. etc." | |
| Rating: | |
| I had a chance to use the MSR Miniworks, and liked it, but didn't care for the weight. This one has a similiar function, but in a smaller, lighter package. The lighter weight does come at the expense of it's sturdiness. This doesn't have the bombproof feel of the Miniworks. I like the tub output though, because it could be set up with some quick connects to refill bladders while they stay in your pack. I used this in a lake full of pollen, and it would clog up rather quickly, but could be cleaned and put back into service easily. | |
| Justin at Moosejaw on 03/14/2009 | |
Good value... keep it in your pants! | |
| Rating: | |
| My friends and I used this filter hiking the Appalachian Trail in NJ this January. The filter worked great the first time, although all the hoses and connections are a pain to deal with in the cold. This lead to my next problem which was that the filter element froze solid after the first use. I had to put the filter in a ziplock bag and in my pants to thaw it out and keep from freezing. That was a real pain, however not a reflection of this filter design. I imagine all the filters would have frozen up. | |
| Robert I. at Altrec on 01/27/2008 | |
Too Much Maintenance | |
| Rating: |  |
| I took this filter out on two trips last year, an overnighter and a week-long trek. The filter began clogging even after I had only pumped a few liters through it. A few swipes with the brush took care of this at first, but it soon became a serious problem. By the end of the week trip the filter clogged every couple of liters, had to be cleaned several times a day, and was extremely difficult to pump even just after cleaning. Mind you, this water was from clear mountain lakes and streams. Fortunately I had some iodine tabs with me as a backup. I cannot have pumped more than 100 liters through this filter. It was such a big disappointment, I am surprised to see so many positive reviews on the site. I am glad some have had good experiences with the Sweetwater, because I have not. | |
| Hiking Mike at REI on 03/04/2008 | |
"Buy any other filter." | |
| Rating: |  |
| I have used many filters in various parts of the U.S. and this by far was the worst I have ever used. You could only get about 1/2 a bottle full before the filter was clogged and spewing from the pressure spout. | |
| Ryan at Moosejaw on 10/21/2008 | |
"don't buy it" | |
| Rating: | |
| I couldn't even get the filter to open to clean it. complete waste of money. | |
| Kelly at Moosejaw on 05/20/2008 | |
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