Pyrrolidone Polyvinyl Sulfone polyester is used for tangential microfiltration with distinct hydrophilic properties and an asymmetric structure: hydrophile and asymmetry, two extremely important factors to guarantee a filtering efficiency that is as constant as possible over time. C41 New tangential flow microfiltration system with capillary polymeric membranes and controlled porosity hollow fibres. A high tech solution, particularly avant garde and advantangeous, available in two different version, for still and sparkling wines, from 20 hl/h up to 150 hl/h.