Review by: rockmaninoff, 2004-08-21
I have not used this product for several years because I found it lacking in many respects and now use a different filter. Originally, this was one of the the best (and only) microfilters available. Its best use was as a combination filter/forearm strengthener, since it required Herculean effort to pump. It was reasonably priced back in the 1980s, but is now much more expensive than other filters. I believe this is the only filter to actually be certified to eliminate all contaminates, but other products work better and have never let me down either.