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Re: Sunlight Sterilization of Water
I have used the SteriPEN with no regrets. It uses UV-C.
Quote:
# Ultraviolet (UV-C) light rays safely sterilize clear water by destroying 99.99% of protozoa (including Giardia and Cryptosporidium), bacteria and even viruses
# SteriPEN protects you from risks that cause botulism, cholera, dysentery and typhoid, just to name a few
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SteriPEN Adventurer Water Purifier at REI.com
The biggest problem I see is having enough UV-C to destroy Cryptosporidium cysts. Nasty stuff it is. 
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Hypography Science Forums Moderator
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"There are no passengers on Spaceship Earth. We are all crew." - Marshall McLuhan
"We must not forget that when radium was discovered no one knew that it would prove useful in hospitals. The work was one of pure science. And this is a proof that scientific work must not be considered from the point of view of the direct usefulness of it." - Marie Curie
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