In 2015, a Merck brand whose name references this process merged with Sigma–Aldrich. A “sterile” form of this process can be performed using a PES membrane fitted to a syringe. A component of BSCs performs a highly efficient form of this process through diffusion, interception, impaction, and electrostatic attraction. Diatomaceous earth (-5[1])aids this process by forming a “cake.” (-5[1])A Büchner funnel (10[1]-5[1])connected to an aspirator (10[2])is used for the “vacuum” form of this process. (-5[1])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 (10[1])from (10[1])a fluid. ■END■ (10[4])