Systems for ultrafiltration function essentially the same as other water filtration methods. This ultra-fine membrane technology is used in an ultrafiltration drinking water system to filter particles as small as 0.025 microns. The diameter of a human hair is usually between 75 and 80 microns, so that should give you some idea of just how tiny that is. This means that an ultrafiltration system literally removes all suspended solids from the water while operating on a micro level. The majority of solid particulates in fluids can be removed by an ultrafiltration system, but unlike a reverse osmosis system, it cannot remove dissolved particles. A microfiltration or conventional carbon filter cannot filter the smallest particles, but an ultrafiltration system can.