Our PTFE membrane has one of the best ratios of airflow to particle retention available on the market. The membrane is available laminated to a non-woven polyester support material, giving the membrane excellent handling and machining characteristics.
compatibility issues, often necessitate the use of fluorocarbon materials. PTFE is an excellent material for filter membranes and is widely used for bulk, distribution, and point-of-use chemical filtration applications. Many applications involve the filtration of aqueous chemicals,which include etching, cleaning, photoresist development, etc. Since
Polytetrafluoroethylene (PTFE) ** is a chemical-resistant, flexible, thermally resistant, non-adherent, high-strength fluoropolymer produced from the free-radical polymerization of tetrafluoroethylene. Due to its strength and broad chemical compatibility, PTFE is commonly used in membrane filters.
MEMBRANE FILTER CHEMICAL COMPATIBILITY CHART Chart below shows the Chemical Compatibility of various types of membrane filters with some commonly used 0 chemicals. All types of membrane filter products were exposed to specified chemicals/reagents for 3 days at 25 C. Upshot: All products retain its Integrity after Chemical compatibility Test.
Aug 7, 2018 · Polytetrafluoroethylene (PTFE) Membrane. Hydrophobic, highly inert, and durable, PTFE is a popular material with a wide operating temperature range and resistance to the damaging effect of many chemicals. When should you use it? DO USE: for filtering solvents and other aggressive chemicals, such as acetone and DMSO.
Polytetrafluorethylene (PTFE) membranes are naturally and permanently hydrophobic. They are ideal for filtering gases, including humidified air. The extreme chemical resistance of PTFE membranes makes them very useful for filtering solvents or other aggressive chemicals for which other membranes are unsuitable.
Acro® 37 TF Vent Device With PTFE Membrane. Multi-Purpose Filter for Small-Volume Venting and Gas Filtration. PTFE membrane and polypropylene housing have broad chemical compatibility. Disposable - Eliminates the cost and labor associated with disc-loaded stainless steel filter holders. Autoclavable. Economical -Available in bulk packaging.
Ultradyne ® absolute-rated polytetrafluoroethylene (PTFE) membrane filters offer the highest level of assurance of chemical compatibility and filtration performance in aggressive chemicals, prolonged hot air service and other severe process conditions. Ultradyne ® filters’ PTFE membrane delivers superior flow rates and long service life.
Where to Use PTFE Filters Typically, PTFE filters are single use filters, but because of their chemical inertness they can be used even for highly acidic samples and testing. These include aggressive solvents, aerosol sampling, degassing solvents, venting applications, and organic-based HPLC.
In addition, solvent-membrane compatibility requires additional consideration of filtration-specific factors. None of these published compatibility guides, for example, monitors the solvent’s ability to wet a membrane or increase extractables. This table does not consider solvent safety issues.
