The main reason for wine filration is to clean it from residual particles, which in general means applying separation stages in different process steps, e.g. via C-CUT hollow fiber modules. Primarily, wine filtration is done to avoid progressing fermentation by remains of yeast in the medium (yeast separation). Further, progressing turbidity due to remains of proteins as well as the negative effect of wine inherent micro-organisms have to be avoided (fining / sterile filtration). In short: Wine filtration is required to achieve micro-biological stability and maintain perfect optical characteristics.