Contributions by G. W. Walton (1)

I have been using the First Need Purifier for years. Never been sick when using it. From Mt.Whitney to Northern Canada to Belarus, no problems. Have taken it to Belarus 3 times. The water there is not recommended to drink for foreigners, as you might imagine. You can use this purifier with complete confidence. It is a little challenging at times to handle, but worth the results. The filter is pricy, but cheaper than a dr. visit. Have filtered from some not so appealing sources and still trouble free. This filter is the only one I own.