

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Bolivia.
💧 Drink Clean, Roam Free — Your Ultimate Gravity Water Filter Pro
The Membrane Solutions Gravity Water Filter Pro is a 6-liter, gravity-fed water purifier designed for group camping, hiking, and emergency preparedness. Featuring a 0.1-micron hollow fiber membrane and coconut shell activated carbon, it delivers up to 1,320 gallons of NSF/ANSI 42, 372, and 401 certified clean water without pumps or electricity. Lightweight, durable, and easy to pack, it’s engineered for reliable off-grid hydration with a flow rate of 0.5L per minute.




















| ASIN | B08ZYMXLMH |
| Best Sellers Rank | #14,283 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #26 in Camping & Hiking Water Filters |
| Brand | Membrane Solutions |
| Brand Name | Membrane Solutions |
| Capacity | 6 Liters |
| Container Type | Box |
| Customer Reviews | 4.6 out of 5 stars 1,563 Reviews |
| Global Trade Identification Number | 00850071881653 |
| Included Components | 6L Gravity-fed Water Bag with Adjustable Tree Strap |
| Installation Type | Not Required |
| Item Dimensions L x W x H | 3.9"L x 2.3"W x 10.6"H |
| Item Weight | 0.8 Pounds |
| Manufacturer | Membrane Solutions |
| Material | TPU |
| Material Type | TPU |
| Maximum Flow Rate | 500 Milliliters Per Minute |
| Model Name | 6L Gravity Water Filter Pro |
| Model Number | OESF021_M1 |
| Other Special Features of the Product | Chlorine Reduction |
| Part Number | OESF021_M1 |
| Power Source | Gravity |
| Product Dimensions | 3.9"L x 2.3"W x 10.6"H |
| Purification Method | Hollow Fiber Membrane |
| Special Feature | Chlorine Reduction |
| Supported Water TDS Level Maximum (PPM) | 500 |
| UPC | 850071881653 |
| Warranty Description | 1 year manufacturer |
R**H
Great Setup!
While I've not actually been able to test the flow rate of this filter in a gravity configuration, it works exceptionally well with smart water bottles. It filters the water well to make it more clear, it tastes good, and I've not gotten sick even though I've had some very mild immune responses; like one may experience after some vaccinations. From what I understand, this is just my body responding to trace amounts of bacteria which may still get into my clean water from cross contaminating it with dirty hands, and results in resistances to local bacteria. Not unlike how seasonal allergies may be less likely to significantly affect local populations who grew up with those allergens. The instructions are clear and easy to follow, but this whole setup is so intuitive I didn't need them anyway. I like how compact this kit is, rolling up nicely in it's bag, and the wide mouth of the flexible collection bag is very useful for scooping water out of places where a bottle cannot reach it. The system does not seem to leak, and I feel safe drinking the water it filters from running sources. But I still prefer to purify the filtered water I collect from standing sources with some Aquatabs, just in case of pet waste on the trails, or dirty shoes walking through the mud.
S**.
Clean Water
I bought this as a gift for my son that loves hiking and camping. He has enjoyed this product very much. He has carried it on many hikes and camping trips. Uses it for fresh drinking water and if cooking something over a campfire. I would recommend this product and I would purchase again.
F**O
This is the one to get
I researched these life saving water filter straws for awhile before I decided to get this one. The reason I chose this one over the others was because there is known flaw in the filter straws. They work great the first few times and the the water flows through really good and then it goes down to a trickle drip to not working at all. This one particular one, has where you can suck through the straw and fix it, it gets rid of the air bubble trapped inside. The other ones don't have this feature. Also I watched some videos users uploaded when they used the blue bag and got the most swampy water you could get and they filtered it and the water come out clean. It really looks to be the best unit to purchase to have on hand incase tshtf. I have not used my unit, but it arrived clean and looks new and I feel better that I have at least something to get water if the power grid goes down.
K**Y
Works great!
It clogged really fast, but that could have been user error. It's gravity fed, so it's naturally slow. Other than that, it worked like a charm. Packed up easy, easy to set up, easy to use. Kept us hydrated backpacking through the Uinta mountains. Some other guys had ones that fed into another back so more water was available faster. You might want to look into those types
M**N
Membrane Solutions Gravity Water Filter Pro 6L: Pure, Convenient, and Reliable
I recently had the pleasure of using the Membrane Solutions Gravity Water Filter Pro 6L, and I must say it has exceeded my expectations in terms of performance, convenience, and reliability. This innovative water filtration system has quickly become an essential part of my daily routine, and I am thoroughly impressed with its functionality. The primary feature that sets the Membrane Solutions Gravity Water Filter Pro 6L apart is its exceptional filtration capabilities. With a filtration accuracy of 0.1 microns, it effectively removes bacteria, protozoa, sediments, and other contaminants from water sources, providing clean and safe drinking water. The advanced filtration technology ensures that the water you consume is free from harmful substances, making it ideal for outdoor adventures, emergency preparedness, or everyday use. The gravity-fed design of this water filter is a game-changer. It eliminates the need for electricity or complicated installation processes, making it incredibly convenient and easy to use. Simply fill the upper chamber with water, and let gravity do the rest. The filtered water collects in the lower chamber, ready for consumption. This hands-free operation allows you to multitask and ensures a continuous supply of filtered water without any hassle. The capacity of the Membrane Solutions Gravity Water Filter Pro 6L is another impressive aspect. With a generous 6-liter capacity, it can cater to the hydration needs of individuals, small groups, or even families. The large storage capacity is especially beneficial during outdoor activities, camping trips, or in situations where access to clean water may be limited. I appreciate the durable and high-quality construction of this water filter. The BPA-free materials and food-grade components ensure that the filtered water remains safe and free from any potential contaminants. The system is designed to be long-lasting, providing reliable filtration over an extended period. Maintenance is a breeze with the Membrane Solutions Gravity Water Filter Pro 6L. The filter elements are replaceable and have an impressive lifespan, depending on usage and water quality. The filter replacement process is straightforward, and the manufacturer provides clear instructions for optimal performance. In terms of value for money, this water filter is an excellent investment. The combination of its exceptional filtration capabilities, convenience, and durability make it a worthwhile purchase. You can have peace of mind knowing that you are investing in a reliable and efficient water filtration system that provides clean and safe drinking water. In conclusion, I highly recommend the Membrane Solutions Gravity Water Filter Pro 6L to anyone in need of a reliable and convenient water filtration solution. Whether you're an outdoor enthusiast, a frequent traveler, or someone concerned about the quality of your drinking water, this filter delivers on all fronts. With its impressive filtration accuracy, ease of use, and large capacity, it ensures that you have access to clean and safe drinking water wherever you go. Choose the Membrane Solutions Gravity Water Filter Pro 6L and enjoy the convenience of pure water at your fingertips.
M**E
Super easy to use, essential gear for camping
I've been going to the BWCA for 40+ years and have used various filters, capsules and other means to filter water and this is by far the most convenient and easiest filter I've ever used. Packs small and is fairly lightweight, has good water flowage and is easy and quick to fill. Great product!
C**L
Waiting for response from the company...
UPDATE: I emailed the company about filter not working and they got right back to me. They asked a couple of questions and have mailed me a replacement filter. They were very responsive and easy to work with. My new filter is on its way. I will continue to update. I bought this last week. I tested it and worked great! I decided to use again this week just to be sure I have it all down and it has refused to work. The water would go through the hose so I removed the filter and it was not the bag or the hose. The filter itself is not allowing more than a drip through. I tried using it as a straw that did not work. I've taken it apart and can't see any obstructions. I have emailed the company and will update this review once it has been resolved. When it worked, it worked great! And the water tastes clean.
J**N
Great light weight filter !
As a professional river guide , i use a lot of water filters, this is a great hassle free way to safe water!
J**D
Great product !
This came neatly packaged & seems to be made of quality materials. Haven't used yet but I'm confident I will be happy with my purchase.
J**N
Works! Easy to use!
Took this backcountry camping for a 3 day trip! It was perfect. It did the job!
E**D
Alles in Ordnung
Es ist alles in Ordnung, angekommen. Über den Qualität kann mich nicht äußern, noch nicht ausprobiert
Y**E
Highly recommend
Not used , but quality seems great, seems great value for the money, and good for everyone to have something like this at hand, in the car, home, go bag for unexpected disasters. Will purchase more for different place I might be in an emergency.
R**A
Genial
Estupendo como kit de emergencia
Trustpilot
1 day ago
1 week ago