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#196159 - 07/26/16 07:33 PM they claim this filters out viruses.
toddfw2003 Offline
member

Registered: 01/08/16
Posts: 306
Loc: Texas

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#196161 - 07/26/16 09:33 PM Re: they claim this filters out viruses. [Re: toddfw2003]
Dryer Offline
Moderator

Registered: 12/05/02
Posts: 3569
Loc: Texas
Give them a call and ask for a "white paper". Viruses aren't that big a concern in the US. I don't filter short of a bandanna. Treat a liter with a couple drops of bleach and hike on.
Website looks really interesting!
_________________________
paul, texas KD5IVP

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#196163 - 07/26/16 09:43 PM Re: they claim this filters out viruses. [Re: toddfw2003]
OregonMouse Offline
member

Registered: 02/03/06
Posts: 6372
Loc: Gateway to Columbia Gorge
Great advertising, but it's still advertising! I'd want to see some objective third party reviews, and whether the EPA approves this gadget for viruses!

For one thing, a filter fine enough to filter viruses will clog up very quickly. There is no mention of the clogging issue or whether the filter can be unclogged/maintained in the field!

For another, the weight given obviously does not include the bucket or the tubing, so the system is definitely not as light as advertised!

Color me skeptical at this point.



Edited by OregonMouse (07/26/16 09:44 PM)
_________________________
May your trails be crooked, winding, lonesome, dangerous, leading to the most amazing view--E. Abbey

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#196164 - 07/27/16 12:42 AM Re: they claim this filters out viruses. [Re: Dryer]
toddfw2003 Offline
member

Registered: 01/08/16
Posts: 306
Loc: Texas
Yeah, the website has some cheap gear. I have never ordered from them but I have thought about it. I always filter and treat. I know its double kill but I would rather be safe than sorry.


Edited by toddfw2003 (07/27/16 12:43 AM)

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#196166 - 07/27/16 08:36 AM Re: they claim this filters out viruses. [Re: toddfw2003]
Dryer Offline
Moderator

Registered: 12/05/02
Posts: 3569
Loc: Texas
My daughter bought me a "LifeStraw" last Christmas. I typically don't filter but it is kinda fun to dip the thing in the lake from my kayak and drink away. I'm amazed how well it works and keep it in my day hike stuff. It filters to .02 microns but has almost no resistance when you drink through it. 2 ozs.
http://www.vestergaard.com/our-products/lifestraw
_________________________
paul, texas KD5IVP

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#196167 - 07/27/16 10:13 AM Re: they claim this filters out viruses. [Re: toddfw2003]
ndsol Offline
member

Registered: 04/16/02
Posts: 673
Loc: Houston, Texas
Their report from Biological Consulting Services. No EPA registration that I can see.

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#196169 - 07/27/16 12:10 PM Re: they claim this filters out viruses. [Re: toddfw2003]
Rick_D Offline
member

Registered: 01/06/02
Posts: 2801
Loc: NorCal
In general that type of filter media is effective for bacteria and cysts; viruses take a pore size requiring more pressure than gravity systems provide. (The parallel tubes used by Sawyer et al are more suited to virus removal.)

If it's giving a reliable 5 or 6-log bacteria reduction then it's potentially useful in North America.

Cheers,
_________________________
--Rick

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#196170 - 07/27/16 01:27 PM Re: they claim this filters out viruses. [Re: toddfw2003]
JustWalking Offline
member

Registered: 01/12/16
Posts: 115
Loc: PNW
RapidPure filters have been around for a bit now. Roger Caffin tested them for BPL in 2014 and came away impressed. If I was interested in one, I'd buy one from RapidPure directly.

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