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Laboratory filter is the scientific laboratory equipment that is used to remove particulates from samples in the laboratory-scale applications. Generally they consist of a filter medium that helps in separating the impurities. This laboratory equipment varies in terms of configuration, sample type, filter paper measurement type, filter medium material and housing material. Several types of filters are available in the market for different type of operations that include membrane filters, pre-filters, centrifugal filters, syringe filters and others. Membrane filters are thin, polymeric films that contain thousand or microscopic spores that can be applied in quantitative separation of suspended particles from liquids and gases. Pre-filters are the scientific equipment placed upstream from membrane filters to reduce particulate loading and help the membrane to operate smoothly. For small-scale laboratory separations such as protein and nucleic desalting centrifugal, this laboratory filter is very effective. Syringe filter consists of a filter element and a housing assembly is applied in applications where a sample must be filtered before entering a syringe. This specialized and proprietary laboratory instrument that is made of variety of porous papers is also available in the market.
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