The problem with single-use filters is… they fail over time*. Filters and membranes clog over time reducing their efficiency, meaning the more you use them, the less effective they become. This matters in healthcare and can reduce the life of your equipment or effect the reliability of your results.
Would you buy a product that - from day 1 - doesn't work as well as it should?
So, if traditional purifiers deteriorate with use, what contaminants do they let through? And, why pollute the earth while trying to purify water?