Platypus GravityWorks High-Capacity Water Filter System for Group Camping and Emergency Preparedness

Product Information

The Katadyn BeFree system can filter smaller particles down to 0.1 microns. The majority of reviewers love that it’s both easy to use and clean. Group-ready: 8 or 12 liter (4.0L/6.0L filtered + 4.0L/6.0L unfiltered) total capacity easily supplies water for groups. The filter has a grey screw lid at both ends, one covering the filter (known as the dirty end) and one that you pour or drink the water from (the clean end). If you’ve drank filtered peaty water depending on the colour of the water you can notice a slight soil taste, but it’s not something I’ve ever been bothered about, the darker the colour the stronger the taste of peat you’ll notice.

Hollow Fiber Advantage: Hundreds of tiny, hollow fibers, enable the microfilter to filter water faster than traditional filter media. Hollow Fiber Advantage: Hundreds of tiny, hollow fibers enable the microfilter to filter water faster than traditional filter media. By using the Platypus reservoirs and soft flask by total weight for the water containers was about 200 grams, then with 3.5 litres of water (3.5 kg) the total weight was 3.7 kg. They work great for larger groups or when you want to filter a lot of water all at once. They’re also quite light, given their speed and ease of use.

Performance Comparison

Effective: Each microfilter is individually tested to ensure it meets all EPA & NSF guidelines for the removal of 99.9999% of bacteria and 99.9% of protozoa*. *This includes Giardia, Cryptosporidium, E. coli, Salmonella and Cholera. We’ve tested this filter abroad and love it for international travel . It’s ideal for when you want to filter all tap water before drinking, and it works wonderfully as a constant companion to keep you hydrated on the go. Effective: Every microfilter is individually tested to ensure it meets all EPA & NSF guidelines for the removal of 99.9999% of bacteria and 99.9% of protozoa*.

Hollow Fiber Advantage: Hundreds of tiny hollow fibers enable the microfilter to filter water faster than traditional filter media. The LifeStraw Squeeze Filter also performed well in testing, though not as much as others on our list. It’s modular, so while it has the filter incorporated inside the squeeze pouch, you can also move it to the outside (and swap out the cap) if filling bottles or not drinking directly from the filter. Both are a great price. But either way, it’s fast enough for what I want! Does the water taste funny or is it just off colour because of the peat? Does it make peaty water clean? The loop by the lid makes it easy to fill without a fear of letting go and losing your reservoir downstream and it’s handy to use to hold it too.

As someone that hikes in the Peak District this is something I’ve got used to! But I appreciate it’s not for everyone. In the instance of being dehydrated or drinking peaty water I know which option I’d choose! We like Katadyn’s Micropur M1 tablets for chemical treatment, as they tend to leave a more subtle aftertaste compared to other brands. The SteriPEN Adventurer has been our go-to UV filter for its long lifespan and light weight. You can buy the filter part separately so you’d be able to replace that and keep your reservoir. Do you still use filter water bottles or is this a better option? The filter system is so easy to use and I loved how it was versatile so you could switch to how you wanted/needed to use it at a particular time. No pumping: Just fill the dirty reservoir, hang it, and let gravity do the hard work—yep, filtering water can be as easy as fill, hang, relax.

The water filters at a good speed! No waiting around for your water, you can fill, filter and drink! There are a couple of versions of the Gravityworks now, the original had two hanging reservoirs, this one has one to hang somewhere with the clean side reservoir being a bottle - this format is easier to use once its full of clean water. Both the dirty resrvoir and the bottle receptacle are 2.0L.

Compare to Similar Products

You can use this filter as a straw directly at the water source or attach it to a bottle of water to drink easily. The filter can be combined with a range of Platypus hydration options or other branded bottles with a 28mm screw top opening. It safely removes 99.9999% of bacteria and 99.9% of protozoa, including Giardia, Cryptosporidium, E. coli, Salmonella and Cholera.