Water filtration on a whole new level!!

I wouldn't mind hearing your opinion on my filter there, Farmboy.
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I've never looked at my filters. I just used them right off the bat. Unfortunately I'm not familiar with how they should look or work etc.

Aks me about gear or slings and I could talk for hours ;)
 
Hey Peter,

The vital pathogen removal will be intact for 5 years. Over those five years, you will lose some activated carbon activity (flavor and odor won't be removed as well). But we stand behind the filters for 5 years.

Travis


psquay said:
Quick question. What is the shelf life of the Greyl cup? If it were to be put in storage does the filter/purifier degrade?

Thanks.

P.
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mobusten said:
Well I ordered a grayl last week and just now some purifiers. I'm eager to test it out! Is there any type of water it wouldn't be ok with? Other than sea water of course.
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Hey mobusten,

No filter removes everything, and that's no exception with GRAYL. GRAYL isn't very effective against fluoride, for instance. And it is much more effective against the heavy metals lead, arsenic and chromium than mercury. And I have no evidence that GRAYL is effective against radioactive elements (though we are researching a filter that might be).

But in the wilds of Canada, you're most worried about bacteria and protozoa - and GRAYL has you covered for that, for sure! Step up to the purifier and we protect you against virus as well.

Thanks!
 
Thanks for the pix, Mobusten. Your filter is not defective.

We try to keep the pleats uniform for cosmetic reasons, but there is no 'weak spot' in this filter. That's because the pressure of water is equal everywhere on the filter. This is a basic principle of hydrology. Think about a hydraulic lift on a tractor or fork lift. They pressurize the pump, the pressure goes up a long tube, then pushes on the cylinder on the other end of the tractor. Every part of the hydraulic system has exactly the same pressure.

The same goes for our cup/filter. There is identical pressure on the metal tube as the plastic part as the filter. And every part of the filter has the exact same pressure - no matter how it's folded.

I hope that makes sense (I don't often bring tractors into my filter explanations!)

Good question!

mobusten said:
Sure thing. I'll show two angles for comparison.

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Yours doesn't look like this StoneHorse?
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Thanks for the answers Travis! Much appreciated. I've got another question now. Do the purifiers have a shelf life before their package is opened?
 
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