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I'd never heard of this unit, Viva. Thanks! It's a funky little thing, but impressive. It sure looks like it would handle all the contaminants you'd find in the Rio Grande except maybe radiation Just avoid using it downstream of Los Alamos, NM and you should be fine. All kidding aside, the only worry I would have would be silt clogging the unit. Rio Grande water in Big Bend can often be pretty silty, depending upon exact location and flow conditions, so settling and pre-filtering your water before putting it into the Grayl might significantly postpone having to pony up the $25 for a replacement cartridge.
That green color is a bit disturbing though
Quote from: mule ears on March 27, 2017, 10:23:49 AMThat green color is a bit disturbing though
And bear in mind, the Grayl is NOT field clean-able, apparently it's not even home clean-able. Your only option once it's clogged is to replace the filter cartridge. I use a combo of pre-filtering and pills as my main water purifier, but I love my backflush-able Sawyer MINI as a back-up.
Quote from: House Made of Dawn on March 27, 2017, 12:52:52 PMAnd bear in mind, the Grayl is NOT field clean-able, apparently it's not even home clean-able. Your only option once it's clogged is to replace the filter cartridge. I use a combo of pre-filtering and pills as my main water purifier, but I love my backflush-able Sawyer MINI as a back-up.The thing that attracts me about the Grayl is that it also removes metals, so hopefully that would protect from any industrial waste dumped upstream.
I did an overnight on the Cross Canyon trail this weekend and used the Grayl on Rio Grande water.The good news is that I drank about a gallon of water filtered with the Grayl and had no problems.The bad news is that the filter was shot after a gallon. I really struggled to get the last couple of pints out of it. If I had a partner or had been going for more than one night, it would have really been a problem. Plus a new filter is $24.50, so I paid $24.50 for one gallon of water. I did not pre filter with a bandanna or anything else. I just figured the bandanna would have let a lot of big stuff through still, but I guess I will try that next time.
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