[pct-l] polar pure

[Rod Belshee]

For those wanting to avoid chemicals, but still concerned about viruses...

Note that the concentrations recommended for both iodine and chlorine are based on killing protozoa and bacteria. The needed to kill viruses is generally only one-tenth of the recommended dosage. (This is why the PUR purifier worked with just a tiny bit of iodine, since the filter takes care of the others.) You could carry a tiny supply of iodine or chlorine for those occasions you might want virus purification (e.g. sources contaminated by livestock), and use it in tandem with filtering to knock out the viruses. 

Steady PCT04


From: armchair hiker - gmail 
Sent: Thursday, January 10, 2008 9:24 PM
To: pct-l at backcountry.net 
Subject: Re: [pct-l] polar pure


You might look at Sawyer filters.

http://www.sawyer.com/biological.htm

Biological Filtration: removes 7 log (99.99999%) of all bacteria like
salmonella, cholera, and E. coli. And 6 log (99.9999%) of all Protozoa such
as Giardia and Cryptosporidium. You will find these removal rates to equal
or exceed competitive options. EPA guidelines allow ten times more Protozoa
left in the water than we allow.

Get the SP120 inline filter. Weighs 1 or 2 oz dry.

No chemicals. You can back flush it in the field or at a faucet.

Something to consider,

- armchair

PS. The Purifier version is much bigger but removes viruses. I would suggest
the inline filter.



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