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.ealisboa.com/mega-grab-Yocan-CubeX-Replacement-Coil-5pk-must-buy/