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patrick kappauf
> 3 dayI didn’t die drinking questionable water in China and here in the states. It’s heavy, doesn’t hold a lot of water, can require some force to use, and is bulky and overbuilt. That being said, it’s still a great purifier and fast. I’ve put mine through it’s paces and still use it in my EDC and day hiking ruck. Wouldn’t use for backpacking.
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Richard Dana
> 3 dayThe replacement filter is simple and easy to use. A filter lasts a good amount of time, unless you try to use really silty water. But that is common sense. No filters like water that is too dirty, even with pre- filters available. The beauty of this filter, honestly, is it’s simplicity. If you want to get rid of the filter cartridge, it costs about $30.00, and you almost have a new filter-pretty cool.
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Erik Zimmerman
> 3 dayDid a 3 night canoe trip down the namekagon river in northern WI, brought this with and didnt have any issues. Used it for drinking during the day and cooking at night, no stomach issues during or after the trip. Seems to work great, cant ask for more. Pushing water through the filter is a bit of a chore but not overly so.
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Black Hat Bushcraft (Matt Mercer)
> 3 dayIf you want the best filtration in the easiest and most convenient system on the market, Grayl is it in my opinion. Once you find it difficult to press your Grayl (10 seconds or more) to filter water, you will soon need a new filter cartridge. I have gotten varied results with filter life with variable being the quality of water filtered. If you pre-filter your water with a millbank bag or strainer of cotton cloth, you will definitely extend the life of the filter cartridge. If you regularly filter turbid water with lots of silt and particulates, it with definitely shorten the life of the cartridge. I like to always keep one or more on hand at home for when they start getting hard to press.
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MC
> 3 dayI like how easy it is to use.
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michael raben
> 3 dayUsing this for backpacking.
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LMSarmiento
> 3 dayWhen I first started researching for a water filter to use for a trip to multiple countries in southeast Asia, with widely varying levels of water quality, I assumed those straws would be more than adequate . After reading up on them, I realized that I needed more. The Grayl fit that bill...and did the job that would end with COVID-19 shutting things down a couple of weeks after that trip. Subsequently, on my return to normalcy, Im much more aware of germ breeding grounds...specifically public water fountains at amusement parks. While a filter will easily do the job, with then additional knowledge of what a purifier can do with water in much worse condition, why should I not continue using a superior product? Yeah, though potentially overkill, its going to cost more per use, but you only have your health, and those of your loved ones. Why compromise when you know youre safe to drink away, virtually anywhere, in good health? You pay for what you get. If this product is within your means, and meets your wants and needs, then pull the trigger and purchase it. You will not be disappointed in that Grayl.
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Blin
> 3 dayIf you use a Grayle Geopress then you need to have these spares to insure that you can handle your water supply long term.
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Rick Holliday
> 3 dayNice to keep an extra filter on hand. Works great!
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Mike
Greater than one weekFollowing Corporal Shawn Kelly It was his recommendation and as usual it’s outstanding