From the LifeStraw FAQs:

Q: Does LifeStraw® personal remove parasites like cryptosporidium and giardia?

A: No, the present version does not filter any parasites.

I've got a couple of the Frontier Filter Straws in various kits as back-up. They claim down to 2 microns, and purportedly they grab crypto and giardia. I've not personally tested.

Edit: Found that McNett/Aquamira now has a slightly larger "big brother" to the Frontier Straw — the Aquamira Frontier Pro. Attaches to tubes, bottles, etc. and has pre-filter. 1-1/4 in. x 5-1/2 in. Inexpensive.


Edited by xbanker (02/12/08 10:54 PM)
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"Things that have never happened before happen all the time." — Scott Sagan, The Limits of Safety