Review Platypus Gravity Works 20l Water Filter Purifie
Price: $120 Listing | $119.95 at REI
Compare prices at 3 resellers
Pros: Fast, piece of cake, hands-gratuitous filtration, large volume, storage
Cons: A little expensive, tin't gather from shallow sources, clogs with heavy sediment
Manufacturer: Platypus
By Bister King ⋅ Senior Review Editor ⋅ May 6, 2019
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Compare to Similar Products
| This Product | Sawyer Squeeze | Aquamira H2o Handling Drops | Katadyn BeFree | CrazyCap 17oz | |
|---|---|---|---|---|---|
| Awards |  | |  |  | |
| Cost | $119.95 at REI Compare at 3 sellers | $29.97 at Amazon Compare at 2 sellers | $fifteen.00 List $xiv.95 at REI | $38.46 at Amazon Compare at 3 sellers | $79 List $79.00 at Amazon |
Overall Score | |||||
| Star Rating | |||||
| Pros | Fast, easy, easily-free filtration, large volume, storage | Lightweight, adaptable, piece of cake to use, lifetime guarantee | Lightweight, inexpensive, kills all pathogens (including crypto), reliable | Easy to employ, fast menstruum rate, collapsible, lightweight | Lightweight construction, purifies water with a bear upon of a button, waterproof, fast charging, long charge retentivity |
| Cons | A little expensive, can't gather from shallow sources, clogs with heavy sediment | Not slap-up for grouping apply, better if you replace the bags | Takes a long fourth dimension to kill crypto, slight gustatory modality to the water, chemical treatment | Lacks durability and reliability | Can't filter particulates, doesn't conform to many other bottles, small bottle size |
| Bottom Line | A fast and like shooting fish in a barrel to utilize gravity filter perfect for small groups | Simple filtration that is lightweight and reliable for private utilise | These drops are a reliable and lightweight choice to carry all over the world | Our favorite lightweight on-the-go filtration system | A UV bottle cap purifier that removes viruses from water sources |
| Rating Categories | Platypus GravityWorks | Sawyer Squeeze | Aquamira Handling... | Katadyn BeFree | CrazyCap 17oz |
| Water Quality (xx%) | |||||
| Durability & Maintenance (twenty%) | |||||
| Handling Time (15%) | |||||
| Weight & Packability (xv%) | |||||
| Ease Of Fix (15%) | |||||
| Ease Of Filtration (15%) | |||||
| Specs | Platypus GravityWorks | Sawyer Squeeze | Aquamira Treatment... | Katadyn BeFree | CrazyCap 17oz |
| Type of filter/purifier | Gravity filter | Squeeze, in-line, on-the-go | Chemical treatment | Clasp & on-the-go | UV handling |
| Measured weight (entire kit, oz) | 11.5 oz | 5.7 oz | iii.0 oz | 2.one oz | 12.6 oz |
| Number of liters (L)/gallons (gal) per lifetime | 1,500 L/396 gal | 378,541 L/100,000 gal | 114 L/30 gal per package | yard L/264 gal | 236,588 50/62,500 gal |
| Filter media or agile ingredient | Hollow fiber | Hollow Fiber | Chlorine Dioxide | Hollow Fiber | UV lite |
| Effective confronting leaner? | Yes | Yes | Yes | Yes | Aye |
| Effective against protozoa? (Cryptosporidium, Giardia) | Yep | Yes | Yeah | Yes | Aye |
| Constructive against viruses? | No | No | Yes | No | Yes |
| Constructive confronting chemicals? | No | No | No | No | No |
| Constructive against heavy metals? | No | No | No | No | No |
| Removes Particulates (sediment, microplastics)? | Yes | Yes | No | Yes | No |
| Filter pore size | 0.two microns | 0.1 micron | N/A | 0.1 micron | N/A |
| Advertised flow charge per unit | ane.75L/min | i.7L/min | Northward/A | 2.eleven L per min | N/A |
| Dimensions | 9.4 x three in | xi x 6 | N/A | 9.05 in 10 2.73 in | North/A |
| Storage chapters (Fifty) | 8 L | two L | 0 | 0.half-dozen Fifty | 0.5 Fifty |
The GravityWorks comes with a conspicuously labeled "make clean" and "dingy" bag that each holds 4 liters for a storage capacity of 8 liters total. It comes in both a 4L and 2L size. If you lot seek a quick and easy to employ filter where setup time and a few extra ounces isn't a big concern, consider this honor winner. Information technology filters quickly and easily. Best used for clear water sources and groups of one to many. Information technology wins our Editors' Option Honour because information technology performs well all-around. It's fast, reliable, and offers deliciously make clean water from the most disgusting sources.
Performance Comparison
This filtration arrangement is like shooting fish in a barrel to employ and can turn gross water into beverage water.
Credit: Bister Male monarch
Water Quality
If you're seeking fresh, clean, h2o gratuitous of most h2o-borne pathogens, the Gravity Works 4L will meet your needs. Loaded with a hollow fiber filter with an absolute pore size of 0.2 microns, it'll filter out all leaner and protozoan lifeforms including giardia and cryptosporidium. It does non filter out viruses and so if you program on traveling to countries where they might be an result, consider a different option.
In our tests, we loaded this filter upward with everything from clear to stinky, murky water. It does excellently when the water is clear and does get rid of smells. Still, when testing it with high sediment (like all filters in our tests), information technology did clog easily afterward just 2L. As a event, this filter does best with clear water, or y'all will need a pre-filter. Meet the tip below.
A look at h2o quality after gathering from a turbid river.
Credit: Amber King
If you're planning on visiting an expanse where your water source will likely contain substantial amounts of sediment (like the Colorado River), it's of import to note that all filters will struggle. Make sure you pre-filter water that is brown or heavy with silt or sediment. Put it into a bag to allow it to settle (without disturbing information technology), and then decant the clear water off the top, leaving the heavier sediment at the bottom.
Immovability and Maintenance
This filter seems to exist well-constructed and quite durable. The plastic overlay offers resistance to punctures and holes. When pulling at the seams, the welded plastic stayed intact and did not tear autonomously easily. The filter itself is a piddling fragile and requires care. The hollow fiber design tin hands stow in its reservoir bags for a little extra cushion. Besides, care should be taken to ensure that it is not frozen, which will impairment the fine fibers inside.
In terms of maintenance, the filter is pretty easy to maintain. It has a lifespan of 1500 liters, and cleaning is super simple. If you detect that the flow begins to slow, flip it the other way, fill upwards the "make clean" bag and allow 4L to affluent it out. When finished, flip it dorsum over.
The filter as well has a natural style of telling you that it's no good anymore. When the backflush doesn't piece of work, it ways that the natural fibers inside are chock-full with captured material, and information technology's time to buy a new filter. Overall, maintenance is way easier than taking the whole matter autonomously and scrubbing it clean. That said, if yous're adventuring in a place with lots of sediment similar the Colorado River, or anywhere in the desert for that affair, be sure to permit the sediment settle out before filtering; if you don't, this will clog the filter, leaving you lot in a predicament that could be dangerous.
We come across the solid connections hither and the backflushing arrangement in a higher place. When the filter gets clogged from lots of sediment (which it will), only detach it and flip the filter to clear information technology of clogs.
Credit: Amber King
The durability and construction of this product seem to be bomber. While we didn't experience any issues, we must note that online, a few users reported that the bag tore at the connection between the nylon clips when filled. We tried this over and over again to see if it would tear and didn't observe any problems.
Handling Fourth dimension
It treats water very quickly once prepare. Nosotros tested the charge per unit of catamenia over three trial periods, and the GravityWorks proved to take i of the most consistent time trials, filtering one liter of water in a mere 52 seconds on boilerplate.
While this is a little slower than the advertised one.75L/min, nosotros are super happy to know that when the pocketbook gets to a depression book, the flow charge per unit is constant, where other gravity filters slowed manner down. The convenient location of the outlet at the bottom of the bag sucks upwardly every terminal drop of h2o. With this kind of output, it's perfect for use as a base military camp filter. You lot can fill it with water, and take 4L filtered in just under 5 minutes! Both bags have an easy-to-utilize clip and then they tin hang. This feature allows you to access and cascade water for a variety of uses. Fast, easy, convenient. No demand to pump or suck.
Fast and convenient.
Credit: Amber King
Weight and Packability
This is a lightweight setup that won't accept upwardly likewise much infinite in your haversack. Weighing 11.45 oz and taking upwardly nigh equally much room as a Nalgene bottle, it suits long backpacking missions where going ultralight isn't a huge concern.
Throw it in along with a handbag of wine, and you'll be just fine hiking up the steeper trails. Of the gravity filters tested, it's i of the lightest and is comparatively lighter than the hand pumps we've tested. This weight takes into business relationship the two bags (clean and dirty), hoses, filter, and the stuff sack into which information technology hands packs.
Credit: Amber Rex
Ease of Setup
Advertised equally a water filter that's perfect for larger groups, it's likewise an first-class option for the solo through hiker. While it'southward not as easy to set up every bit other filters that y'all can gather water on the go, of the gravity filters tested, the GravityWorks doesn't have many moving parts and is pretty like shooting fish in a barrel to use. The only downside is that you have to be able to scoop upward your h2o. So this filter isn't a great option if your water source is a shallow puddle. Lakes, rivers, streams and the like are just perfect.
Offering a two bag setup, information technology provides yous with the option to shop make clean and muddy water on the go. If you know that yous're going to run across a section of trail without water, load up the "muddy" side as an auxiliary reservoir.
When you're fix to filter, find a place that you can hang or lay down the "clean" bladder that is a little higher than the filtered end. Unlike other gravity filters, you don't need a huge difference in height between the clean and muddy reservoir to allow filtration, which is due to the location of the outlet in the bottom right corner.
Gathering h2o typically requires a flowing source.
Credit: Amber King
Attach the connection end into the "clean" reservoir, connect it to the filter, and connect that cease to the dirty bladder. Make sure that the zip closures that can be difficult to zip in cold weather condition are closed and get ready for filtration.
Discover a tree branch or the similar to suspend the bags from.
Credit: Amber King
Ease of Filtration
Similar all gravity filters, this part is super easy. There's no pumping or sucking required. Unclamp the hose and await for cute, clean, fresh water. What's more, you don't have to utilise the "clean" reservoir provided. The adaptor on the stop of the hose is pretty small and volition easily fit into the neck of any bottle or the trunk of any hydration bladder. Yous just have to hold it in identify.
This system will maintain a substantial rate of flow, even when it gets pretty empty. If hung upwardly, it will shift under the weight of the water every bit it trickles to the corner, sipping up every terminal bit of water nerveless. Overall, filtering water with this setup is super easy. Once the clean reservoir is loaded upward, there is a cap you can put on information technology to use as a storage reservoir. Information technology can as well be clipped up every bit a handwashing station or even a refreshing shower on a hot day.
Filtration with the Platypus Gravity doesn't crave a huge height differential.
Credit: Amber King
Value
We think the value is right where it should be with this exceptional product. Given that the filter cartridges volition final you for about 1500 Nalgene bottle fills, and don't cost much to supersede, it'due south a good deal.
We spot a rainbow afterwards a big storm. Here we haversack into the remote areas of Peru. With a gravity filter in hand like the Platypus, it makes gathering h2o easy.
Credit: Amber King
Conclusion
The Platypus GravityWorks filter is our favorite for backcountry travel. It can filter a lot of water quickly, easy to prepare, and requires no effort in the filtration process. It gets rid of all microorganisms just doesn't protect against viruses. While it functions quite well to get many people hydrated in a base-camp style, it is also super useful for the solo traveler who might accept a little actress room in their pack. The best gravity filter out there, in our apprehensive opinion.
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Source: https://www.outdoorgearlab.com/reviews/camping-and-hiking/backpacking-water-filter/platypus-gravityworks
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