Selecting an Inline Filter on Amazon.com
An inline filter is used to filter large volumes of solution passing from one laboratory apparatus to another. The housing containing the porous filter membrane may be disc- or capsule-shaped, and has inlet and outlet hose barbs to connect to tubing. For filtration of large volumes and difficult samples, a capsule filter provides greater capacity than a disc filter. Inline filters are typically found in scientific or medical facilities for use by technicians, scientists, researchers, and medical personnel.
The filter housing can be made of polypropylene for durability and chemical resistance, acrylic for impact resistance, or stainless steel for strength and reusability. Filter membranes trap particles in aqueous solutions, solvents, or gas as they flow through the filter. Membranes can be made of a variety of materials suited to the filtration application, including polypropylene, nylon, PES (polyethersulfone), PTFE (polytetrafluoroethylene), glass microfiber, or quartz. A chemically resistant polypropylene membrane filters solutions containing organic solvents, and a PTFE membrane filters chemically aggressive solutions or reagents. An inline filter may have a prefilter for use with heavily contaminated samples. The prefilter can be made of glass microfiber or quartz to protect a secondary membrane made of PES or nylon.
Retention values vary widely, and they represent the maximum size of particles that can be trapped. Some filters have retention values ranging from 0.05μm to 1μm for use in groundwater analysis or pharmaceutical filtration applications, and heavy-duty filters have retention values of 5μm and 10μm for filtering particulates or contaminants from samples.
Inline filters may be used in ground water analysis, pharmaceutical research, or analytical chemistry, for a variety of filtration applications. An inline filter/degasser (IFD) is used in high-performance liquid chromatography (HPLC) mobile phase to trap particulate or separate organic compounds and to vent gases in aqueous solutions or solvent. A bidirectional venting filter releases air or gas while preventing contaminants from entering vessels such as fermentation tanks or incubators. Vacuum protection filters help prevent contaminants from entering laboratory systems and are typically equipped with a chemical trap such as activated carbon, desiccant, or a molecular sieve.