Cool product for backcountry or travellers
I just returned from two weeks in Peru, where I tried a newfangled water purifier called a SteriPen. It's basically a UV bulb that you stir clear water with to sanititze it. 90 seconds for a quart does the job. The UV rays disrupt the DNA of pathogens making them nonharmful. We used it all the time rather than buy bottled water and it worked great (no tourista). We did avoid salads and uncookable/unpeelable foods. But we drank untold quarts of water hiking about, especially exploring Machu Picchu which was virtually abandoned due to a rail strike. We were very lucky to get into the area just before the strike (and before the strikers blocked the roads by dump-trucking boulders to block the roads); M.P. hasn't seen an open day with that few people since it was opened! And we got to spend the whole day exploring it pretty much all by ourselves. BTW, those Incas were some seriously smart fellers.
Anyway, now I'm excited to use in instead of my filter for the backcountry. It's less than half the size easily and very lightweight, and our backcountry water here is crystal-clear. It's also VERY easy to use. I suspect if you're using turbid water you'd need to let it settle first since it needs the light to penetrate all the water. Of course, have a backup (which you have in your first aid kit anyways right?).
Anyway, free unaffiliated review. We liked it.
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in Lyons, CO