title: Two modifications making membrane filtration more economical.
abstract: Two economical membrane filtration techniques are described: (1) vacuum filtration through a single funnel into several sterile containers and (2) pressure filtration using an inexpensive combination of pressure source, vessel, and valve.
mesh_terms: D001431:Bacteriological Techniques; D005374:Filtration / Q000379:methods*; D008567:Membranes, Artificial; D011312:Pressure; D013242:Sterilization / Q000379:methods*
chemical_list: D008567:Membranes, Artificial