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ScrappyMalloy
22
Oct 19, 2015
SteriPENs are as reliable as any other filtration method that's 99.9% effective (gravity, squeeze, mechanical, etc.). You can rest easy.
I have experience using the classic SteriPEN here in The Sierras. Mine has a metal mesh pre-filter to take out almost all particles. If you don't have that, then you can use a bandana to get the particles or murkiness out.
The UV light kills all of the bacteria in the water and makes it safe to drink after turning on the SteriPEN and agitating for I think 60 seconds. Read the instructions. You DO need to have a transparent, non-opaque container to agitate with the SteriPEN. The clear wide-mouth Nalgenes work well.
As always, this is an electronic device that can fail. Dead battery, you drop it and shatter the glass bulb, you lose it, etc.
ALWAYS have a backup method to filter water if/when your primary method breaks fails.
That means carrying iodine or other purification tablets. Maybe Aquamira if you want to carry some extra weight. Not a bad idea to have extra batteries too.
I know a lot of people carry these SteriPENS while travelling in areas of the world with sketchy water. Their use is not limited to outdoor applications.
If you don't know much about water filtration and the options, you may want to do some research to find out what will work best. Outdoor Gear Lab has good info.
I would turn most solo/duo backpackers away from the big and heavy pump or gravity filters. Too much going with those. A lot better for a good-sized group.
I have tried a few and personally like the Sawyer Squeeze for it's light weight, versatility, and simplicity.
You also don't have to carry extra batteries :)
My good friend who has done multiple NOLS programs sticks to Aquamira and doesn't mind the taste.
In the end, find what works best for you and your uses!
But please do invest in water filtration and make sure it's a quality product.