Best Water Filter.
MountainMan Cowboy: 
This thing is so much better than the MSR Sweet Water Im still laughing years later.
review: first need deluxe water purifier
Dick Scott:
My wife and I just returned from Bhutan. Previously she was most resistant to use of purifiers because of their difficulty. The new first need was easy, fast and I trust helpful for preventing water borne disease.
One of the Best
JSteinhilper:
Although my camping trip was one of the worst ever, one thing that worked great was the First Need water *purifier*. One of the things that I really liked about it before buying it was the fact that it also took care of viruses, not just crud and bacteria. You can also hang it from a tree or something, and you don't have to pump. That could have worked better, seems to be lacking a gasket or something, leaked a little bit for that part but I'm not sure the bag I was filling was made to fit either. The water tasted just great. It came out crystal clear and clean, but it really didn't show up until I saw just what I was pumping into it, nice and brown. And it really wasn't a lot of work, I used the siphon feature as much as I could, but when I did use the pump, it was not a lot of work. I just wish my camping trip worked out as well as this thing.
Works great as a gravity/inline filter
Timster: 
This is a very well designed and reliable filter/purifier, even if it is a bit bulkier and heavier then some other popular models. To help shave off some of that weight, I bought this filter on the hunch that I could use it as a gravity filter _without using the pump_. I was told by an customer support person that the pump is needed to prime the filter before the gravity feed would work. I've discovered that isn't true; it is easy to attach a hose to the output nozzle on the filter and suck a little bit to get the gravity feed going. I also was able to dremel and file the pre-filter enough so it would fit in side a platypus's screw-on-hose-attachment area. It took some work, but now I have an "invisible" pre-filter in my 4L platypus to clean the gunk out before it goes into the main filter. It also can work as an inline filter, but I'm a bit worried about the hose pulling off the output nozzle of the filter when it's inside the pack. After your done filtering, though, a lot of water (ie. weight) is still inside the filter, which can slowly leak out into your pack. Luckily, I've found that shaking for 15 secs removes most of the water. If weight isn't a big issue, I'll bring the whole pump, since it allows for much faster filtering (and purging water from the filter). Hope this helps someone...-Tim
amazing
bigbobjoe682302568:
works simply amazing, tested on crapy tasting tap water at home to see if there is a difference, and sure enough better tasting that "spring water" out of bottles, saving for the event of a hurricane, or my next camping trip
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