Question

The strength of these objects is measured by a bubble point test. These objects are wedged inside pipette tips used for samples that can aerosolize. In biomanufacturing, these devices (20[1])made of PES or cellulose acetate are rated by a molecular weight cutoff and are placed (20[1])tangential to the flow to prevent them from fouling. Sand coated in a microbial sludge acts as the trickling type of (20[1])these devices (20[1])at a water (20[1])(*) treatment plant. (10[8])Chemists dry crystals (10[3])on one of these (10[1])objects (10[1])shaped like (10[1])a cone sitting atop a vacuum (10[2])flask. (10[3])Diatomaceous earth and activated charcoal are cheap (10[1])materials (10[1])used (10[1])in these devices, (10[2])which cake (10[1])if their pore size isn’t big enough. For 10 points, name these membranes that separate (10[1])solids from fluids. ■END■ (10[4])

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