Membrane filters are thin microporous films employed to trap or retain particulate impurities from an air source that is drawn through them. With efficiency rates of over 99% particulate removal, these semi-permeable materials rival even ULPA and HEPA air filters. As a result, these compact filtration devices are seen in a number of industries.
Related Categories
|
Precision Filtration ProductsPhiladelphia, PA 888-679-6645 On the market for membrane filters? Precision Filtration Products is your one stop source for filters of all kinds for use in applications of all varieties. We serve an extensive variety of industries, and our product line is broad. We're confident that we can help your company meet its air quality management needs. Call us or visit our website to learn more.
Modular Cleanrooms, Inc.Denver, CO 800-496-7666 For more than 30 years, Modular Cleanrooms, Inc. has been supplying its customers with high-quality membrane filters and other air contaminant management solutions. Our equipment is state of the art, and our service personnel lead the industry in terms of knowledge and expertise. All of our equipment is manufactured with pride in the United States of America.
Clark FilterLancaster, PA 717-285-5941 Nobody knows membrane filters like the experts at Clark Filter. We are an ISO 9001:2008 registered manufacturer of air filtration equipment solutions, and our manufacturing process and product line are second to no other company in the air quality management industry. Visit our website or call our service personnel to learn how we can serve your company.
Dynamic Filtration, Ltd.Waterloo, ON 800-265-4544 Dynamic Filtration LTD is a leading supplier of membrane filters and other air quality management products. We serve a long list of OEMs with our products, and our long list of satisfied customers is evidence of the product quality and expertise we offer. We're confident that you won't find better air filtration solutions anywhere else. Contact us today for more information.
Universal Air Filter CompanySauget, IL 800-541-3478 At Universal Air Filter, we understand that a client's need for air quality management equipment can change over time. That's why we offer both replacement filters as well as prototyping services. By choosing Universal, you can be sure that the membrane filters and other filtration products on our line are top quality. We'll work closely with you to connect you with the products you need.
|
Membrane filters are thin microporous films employed to trap or retain particulate impurities from an air source that is drawn through them. With efficiency rates of over 99% particulate removal, these semi-permeable materials rival even ULPA and HEPA air filters. As a result, these compact filtration devices are seen in a number of industries such as electronics, research and science laboratory, sanitation, medical, ventilation and biopharmaceutical. As these mechanisms do not require the use of chemicals or additives as with some filtration systems, they are safe to use and a cost effective means of air purification. Additionally, membrane filters require minimal energy as they can be installed as inline filters within pre-existing flow tubes. As with all air cleaner filters, membranes must be cleaned regularly to ensure optimal functionality. Backwashing, process flow disruption and diafiltration are all effective means of automatic in-place cleaning. Alternatively, filters can be removed, washed and sterilized in an autoclave. Successive membrane filtration significantly reduces maintenance needs and is often used to improve productivity. In this arrangement, a series of membranes are put in place with progressively smaller pore sizes to first remove large particulates allowing secondary filters to trap micro particles and microorganisms. In some instances the trapped slurry can be recycled and drawn back into the system. Successive membrane filtration allows for very specific slurry separation and retrieval.
Nanofiltration, ultrafiltration and microfiltration techniques all employ membrane filters. The basic function of each is that an air stream is drawn through a thin material which allows the air, but not particulates to pass. The air stream and particulates must both be taken into account during selection and therefore the composition of the membrane must be carefully calculated to exclude undesirable particles while remaining semi-permeable. The continuous matrix of pores can be classified as either polymeric or ceramic. While ceramics are used in air filters, they are more frequently used in liquid membrane filtration. Polymeric and other advanced synthetic materials vary in thickness, a significant factor in choosing the correct membrane for a given application. Nitrocellulose, cellulose acetate, coated PTFE, nylon, polycarbonate and mixed cellulose ester materials are common membrane materials. Considerations beyond porosity and thickness include effectiveness, absorption, flow and binding requirements. The frame or holder should also be suited to the specific application. Vacuum type glass holders, sintered glass or stainless steel supports and polyester drain discs are often used to hold the membrane taut and in place. Membrane filters are becoming more popular as they remove the possibility of filter contamination due to shedding particles or out-gassing which occurs in other fibrous filters.
