Only a thin line now separates biopharmaceutical manufacturers and suppliers because the latter are increasingly becoming the process knowledge owners in the biopharmaceutical industry. As a result, suppliers are racing to become the most efficient “total solutions” provider. In the 1990s, leading players in the industry such as Pall, Millipore, and Sartorius all supplied membrane filters for upstream and, to some extent, downstream processes with their crossflow and final filtration offerings. Pharmacia (which became GE Healthcare) was the major force…