The Alfa Laval UF04B is a high-performance spiral ultrafiltration (UF) membrane element designed for demanding applications in the food, beverage, and pharmaceutical industries. Constructed with a durable polysulfone membrane, it provides a nominal molecular weight cut-off (MWCO) of 10,000 Dalton, making it exceptionally effective for the concentration, purification, and fractionation of proteins, enzymes, and other macromolecules. Its robust design ensures reliable operation, consistent performance, and a long service life, contributing to efficient processing and high product yields. The UF04B is an ideal solution for processes such as whey protein concentration, enzyme purification, and clarification of various process streams.