Round 11: Tossup 12

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 aids this process by forming a “cake.” A Büchner funnel (10[1])connected to an aspirator is used for the “vacuum” form of 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■

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