[pct-l] CDC recommendations for water treatment

[jcil000-pctchat at yahoo.com]

Now that I admitted my error in posting my interpretation that the CDC was 
obliquely referencing the Steri Pen
in the statement, please tell us Bill which other product on the market fits 
that description as given on the CDC
webpage??

This is not a contest. Do you have an explanation for their reference? Another 
product?

I would also like to repeat myself. The CDC is recognized internationally as the 
top experts in
medical science. I'm afraid anything that the Steri Pen company points to is 
simply not at the 

CDC level. The CDC trumps any "independent lab" research provided by a company 
where
there might be a conflict in testing results. To deny that is amusing.

I might add that the Steri Pen company itself warns that its product is not 
highly effective
in water that is more than mildly cloudy / turbid. 






________________________________
From: Bill Burge <bill at burge.com>
Cc: PCT MailingList <pct-l at backcountry.net>
Sent: Thu, October 21, 2010 7:03:57 PM
Subject: Re: [pct-l] CDC recommendations for water treatment

You need to avoid altering content that you indicate as "transcribing".

The line from your post:

"5)   Ultraviolet light treatment of water is not effective   against 
Cryptosporidium at normally-used levels. i.e. Steri Pen type products."

is NOT the same as what is in the original page:

"Ultraviolet light treatment of water is not effective against Cryptosporidium 
at normally-used levels."


That is not transcribing.  It is "interpretation".

Steripen's site points to a number of independent tests that DO indicate 
effectiveness against cyryptosporidium.
http://www.steripen.com/micro-biological-testing


BillB


On Oct 21, 2010, at 6:34 PM, jcil000-pctchat at yahoo.com wrote:

> The following recommendations by the Centers for Disease Control (CDC) are 
> useful in 
> 
> the avoidance of infection by Cryptosporidium. 
> 
> To avoid Crypto infection, they advise the following:
> 
> 1)  That the use of water filters which  an “absolute one micron” filter, or a 

> filter   certified to remove Cryptosporidium under NSF International Standard  

> #53 or #58 for either “cyst removal” or “cyst reduction” be used. (see A Guide 

> to Water Filters for more   information.
> 
> 2) That Cryptosporidium is poorly inactivated by chlorine or iodine  
> disinfection.***
> ***The product sold by REI called "Potable Aqua / Chlorine Dioxide Water 
> Purification Tablets" claims effectiveness in four hours.
> The down side to this product is that it "causes irreversible eye damage" if 
>the 
>
> user gets residue into his/her eyes.
> 
> 3) That boiling at a rolling boil for 1 minute (at altitudes greater than 6,562 
>
> feet   (>2,000 m), boil water for 3 minutes) 
> 
> is recommended.
> 
> 4)  Cryptosporidium is not killed by alcohol gels and hand sanitizers.
> 
> 5)   Ultraviolet light treatment of water is not effective   against 
> Cryptosporidium at normally-used levels. i.e. Steri Pen type products.
> 
> CDC web links below:
> 
> http://www.cdc.gov/crypto/gen_info/filters.html
> 
> http://www.cdc.gov/crypto/health_professionals/bwa/dialysis.html
> 
> If I made a mistake in transcribing this information for my hiking friends, 
> please post corrections but I think I've summed up their information.
> 
> Also, in closing, the weblink shows wording by manufacturers which might be 
> misleading while reading a product label. Be sure to read that
> CDC warning.
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