ALpHA^® Polypropylene Microfiber Filter

The ALpHA® Polypropylene Microfiber Filter is an absolute rated, pleated depth-type filter cartridge constructed entirely of 100% polypropylene. It features a self-bonded media with multiple layers of successively finer fibers and smaller pores, resulting in a tapered pore structure that provides high dirt holding capacity, superior flow rates, low pressure drops, and submicron particle retention. It is thermally bonded to end caps for chemical compatibility and low extractables, suitable for a wide range of fluids and applications.

The ALpHA® Polypropylene Microfiber Filter is used in diverse applications including water purification, chemicals, solvents, biologicals, pharmaceuticals, ophthalmics, cosmetics, diagnostics, serum products, food and beverage, syrups, microelectronics, photonics, coatings, printing, metal finishing, photovoltaics/solar, petrochemicals, oil well production, and compressed air and gases. Its wide chemical compatibility and low extractables make it suitable for these varied industries.

ALpHA® Polypropylene Microfiber Filters are available with absolute particle retention ratings ranging from 0.45 to 70 microns. The cartridges come in a range of lengths and styles to fit most standard filter housings. All components, including filter media, supports, core, outer guard, and end caps, are made from FDA-approved polypropylene. Sealing options include Buna, EPR, polyethylene, silicone, Teflon® over silicone, and Teflon® over Viton® O-rings or gaskets.

The ALpHA® Polypropylene Microfiber Filter’s uniqueness lies in its self-bonded, multi-layered polypropylene media with a tapered pore structure that provides high dirt holding capacity and superior flow rates at low pressure drops. Its integral construction via thermal bonding to end caps ensures excellent chemical compatibility and minimal extractables. The filter contains no binders, adhesives, or surfactants, is biologically inert, non-toxic, and meets FDA and USP Class VI standards, making it ideal for high-quality filtration with long service life.

Yes, the ALpHA® Polypropylene Microfiber Filter is suitable for regulated biopharmaceutical manufacturing. It is manufactured in conformance with cGMP, meets FDA requirements for food contact use per 21 CFR 177, complies with European Commission Directives including Regulation (EU) No. 10/2011, and passes USP Class VI biological tests for plastics. It exhibits bacterial endotoxin levels below 0.5 EU/mL as determined by the Limulus amebocyte lysate (LAL) test, ensuring suitability for sensitive biopharmaceutical applications.

Commonly used complementary products with the ALpHA® Polypropylene Microfiber Filter include upstream single-use systems such as Single-Use Systems, M-Flex® TPE Tubing, M-Sil™ Braid Reinforced Silicone Tubing, and BioFlex® Fluid Path Assemblies. Downstream, products like the SGT (Single-Use Gauge Tee) are also commonly integrated.