Whey diafiltration was carried out with a UF25-PAN polyacrylnitrilic membrane with 25 kDa molecular weight cut-off at volume reduction factors (VRF) VRF=2. VRF=4. VRF=6. VRF=8. https://www.spidertattooz.com/OPI-Infinite-Shine-Combo-Base-Top-Indefinitely-Baby-ISL55-p26708/