In 2015, a Merck brand whose name references this process merged with Sigma–Aldrich. A “sterile” form of this process can be performed (10[1])using a PES membrane fitted to a syringe. A component of BSCs performs a highly efficient form of this process through diffusion, interception, (10[1])impaction, and electrostatic attraction. Diatomaceous earth aids this process by forming (10[1])a “cake.” A Büchner (10[1])funnel connected to an aspirator is used (10[1])for (10[1])the “vacuum” form of (10[1])this process. HEPA (“HEP-uh”) units perform this process, which can also be performed using specialized paper with uniform pore sizes to block particulate matter. For 10 points, name this process of separating solids from a fluid. ■END■