First Impressions of Membrane Solutions Gravity Water Filter Bag
Staying hydrated in the backcountry isn’t just about comfort; it’s about survival. That’s why I was eager to get my hands on the Membrane Solutions Gravity Water Filter Bag. This 6-liter bag promises to transform questionable water sources into safe drinking water, offering a convenient and reliable solution for hikers, campers, and anyone venturing off the grid.
For years, I’ve relied on pump filters and chemical treatments, but I was hoping to find a gravity-fed system that could handle larger volumes with less effort. The Membrane Solutions Gravity Water Filter Bag, made by Membrane Solutions, with its advertised 3000-liter filter capacity and ease of use, seemed like the perfect upgrade. I was especially intrigued by the included accessories: a water filter straw, silicone cover, water hose, shut-off clamp, expansion interface, and a storage bag.
Unboxing the Membrane Solutions Gravity Water Filter Bag, my initial thought was, “Compact!” Everything packs neatly into a small storage bag. The bag itself felt durable, and the included accessories appeared well-made.
Compared to my old pump filter (a Sawyer Squeeze) and my chemical treatment tablets, the Membrane Solutions Gravity Water Filter Bag promised hands-free operation and a significantly higher flow rate. While the pump filter is great for individual use, this filter bag is ideal for groups needing a larger water supply. My initial reaction was optimistic; I was excited to see how it would perform in the field.
Real-World Testing: Putting Membrane Solutions Gravity Water Filter Bag to the Test
First Use Experience
I took the Membrane Solutions Gravity Water Filter Bag on a three-day backpacking trip in the Ansel Adams Wilderness, high in the Sierras. Water sources were abundant, but potentially contaminated with giardia and other nasties. I used the bag to filter water from a fast-flowing stream.
The setup was straightforward: fill the bag, hang it from a tree branch using the integrated straps, and let gravity do its work. Initially, the flow rate was a little slow, likely due to some air trapped in the filter. After a few minutes, the water flowed steadily.
The water tasted clean and fresh, with no noticeable aftertaste – a significant improvement over my usual iodine-treated water. After the first use, I noticed a slight build-up of sediment on the pre-filter screen. I flushed it out easily with clean water.
Extended Use & Reliability
After several weeks of use on various camping and hiking trips, the Membrane Solutions Gravity Water Filter Bag has proven to be a reliable addition to my gear. The bag material has held up well, showing no signs of leaks or tears.
Maintenance is relatively simple: backflushing the filter after each trip helps maintain a good flow rate. The bag itself can be easily cleaned with soap and water. Compared to constantly fiddling with my pump filter, this gravity system is a breeze.
This filter has definitely outperformed my expectations for ease of use and water volume. It allows me to quickly purify a significant amount of water for myself and my hiking partners.
Breaking Down the Features of Membrane Solutions Gravity Water Filter Bag
Specifications
The Membrane Solutions Gravity Water Filter Bag boasts a 6-liter capacity, making it ideal for small groups or extended solo trips. Its filter is rated for up to 3000 liters of water, offering long-lasting performance. The filter utilizes a 0.1-micron pore size, effectively removing 99.9999% of bacteria and 99.99% of protozoa.
The bag is designed to operate within a temperature range of 41F to 100F. It comes with a variety of accessories, including a water filter straw for individual use, a silicone cover for the nozzle, a water hose for easy dispensing, a shut-off clamp to control water flow, an expansion interface for connecting to other containers, and a convenient storage bag. These specs are critical because they dictate the filter’s effectiveness, capacity, and overall usability in diverse environments.
Performance & Functionality
The Membrane Solutions Gravity Water Filter Bag performs its primary function – filtering water – exceptionally well. The water tastes clean and is free from visible sediment. While the initial flow rate might be a little slow, it improves with use as the filter becomes fully saturated.
A notable strength is the ease of use. Simply fill, hang, and let gravity do its work. A potential weakness is the bag’s susceptibility to punctures if not handled carefully in rocky terrain. However, it meets my expectations.
Design & Ergonomics
The bag is made from a durable, BPA-free material. Although it’s lightweight when empty, the 6-liter capacity means it can become quite heavy when full.
The integrated hanging straps are a convenient feature, allowing for easy attachment to trees or other supports. There is a slight learning curve.
Durability & Maintenance
With proper care, the Membrane Solutions Gravity Water Filter Bag should last for many years. Regular backflushing and careful handling are key to prolonging its lifespan.
Cleaning the bag and filter is relatively straightforward. The filter cartridge itself is not replaceable, meaning the entire unit will need to be replaced after 3000 liters.
Accessories and Customization Options
The included accessories significantly enhance the bag’s versatility. The water filter straw is a handy backup for individual use. The water hose and shut-off clamp make dispensing water into bottles and other containers easy.
The expansion interface allows for connecting the filter to larger water bladders or containers, increasing its overall capacity. There are no specific customization options available, but the universal hose fitting allows for using different hoses and connectors.
Pros and Cons of Membrane Solutions Gravity Water Filter Bag
Pros
- High Filter Capacity (3000 liters): Provides long-lasting water purification, making it suitable for extended trips.
- 0.1 Micron Pore Size: Effectively removes bacteria and protozoa, ensuring safe drinking water.
- Gravity-Fed System: Requires minimal effort, allowing for hands-free operation.
- Included Accessories: Comes with a water filter straw, hose, and other accessories for enhanced versatility.
- Compact and Lightweight: Easy to pack and carry, making it ideal for backpacking and camping.
Cons
- Bag material could be more puncture-resistant.
- Filter cartridge is not replaceable; the entire unit must be replaced after 3000 liters.
Who Should Buy Membrane Solutions Gravity Water Filter Bag?
The Membrane Solutions Gravity Water Filter Bag is perfect for backpackers, campers, and anyone who needs to purify water in the backcountry. It’s also a great option for international travelers visiting regions with questionable water sources. Small groups and families will appreciate the bag’s 6-liter capacity and ease of use.
This product might not be ideal for ultralight hikers who prioritize minimizing weight above all else, or for those who prefer individual water bottles over a shared water supply.
A must-have accessory would be a durable stuff sack to further protect the bag from punctures during transport.
Conclusion on Membrane Solutions Gravity Water Filter Bag
The Membrane Solutions Gravity Water Filter Bag offers a reliable and convenient way to purify water in the outdoors. Its 6-liter capacity, 0.1-micron filter, and included accessories make it a versatile choice for a variety of adventures. While the bag material could be more puncture-resistant, its overall performance and ease of use outweigh this minor drawback.
At $49.99, the price is justified considering the bag’s filter capacity and the convenience it offers. I would definitely recommend the Membrane Solutions Gravity Water Filter Bag to anyone looking for a hassle-free water purification solution.
Grab your Membrane Solutions Gravity Water Filter Bag today and experience the peace of mind that comes with having access to clean, safe drinking water, no matter where your adventures take you.