GE's hydrophilic membranes for filtration include: polycarbonate and polyester, nylon, nitrocellulose-mixed esters, polyethersulfone, cellulose acetate and silver membranes
Filters for prefiltration or high dirt-loading capacity include: glass fiber with or without binding, and polypropylene prefilters, which are often used for removing large particulates from solutions before utilizing the smaller pore-sized membranes
Hydrophobic membranes include: Teflon® with or without a supportive backing; and nylon, with an internally supported web and polypropylene membranes. PVP-free PCTE (polycarbonate) from GE, which is slightly hydrophobic, is included under the hydrophilic membranes.
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