ALpHA® BW1 Polypropylene Microfiber Filter
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ALpHA® BW1
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ALpHA® BW1
The ALpHA® BW1 bottled water filter is optimized for maximum performance, safety, and economics in protecting bottled water from Cryptosporidium and Giardia contamination.
The ALpHA® BW1 bottled water filter has been tested and approved per NSF Standard 53 as an absolute barrier to Cryptosporidium and Giardia in potable and drinking water applications. It also complies with the CDC/EPA recommendation for using absolute-rated 1 µm filters to control Cryptosporidium in drinking water.
In order to ensure consistent, reliable filtration performance, Meissner tests each BW1 filter during manufacture. Each BW1 filter shipment contains a Certificate of Conformance certifying the quality of that product lot.
The 1 µm absolute-rated, BW1 pleated filter cartridge provides unmatched filtration performance. It contains a self-bonded microfiber filter medium composed of multiple layers of successively finer fibers and smaller pores. This highly porous, tapered pore structure provides superior flow rates and high throughputs while maintaining an extraordinary dirt holding capacity. The filter’s rugged, all-polypropylene construction withstands everyday hydraulic challenges in bottling applications.
The BW1 filter can be repeatedly hot water sanitized or inline steam sterilized. It withstands common industrial cleaning chemicals, sanitizing agents, biocides, disinfectants, and cleaning solutions.
The BW1 filter provides the industry’s highest level of cleanliness and lowest extractables. Constructed of non-fiber-releasing, biologically inert materials, it is fabricated without use of binders, adhesives, plasticizers, or surfactants. The BW1 filter is manufactured in a cleanroom.
The BW1 bottled water filter complies with FDA guidelines for food contact use. It also complies with USP Class VI Plastics Tests used for determining biocompatibility of materials.
Design Features
- Absolute barrier to Cryptosporidium and Giardia
- Complies with NSF Standard 53 and EPA/CDC Guidelines
- Lot certified quality
- High flow rate-low pressure crop
- High throughput, long service life
- Economical in use
Filter Configurations Available for ALpHA® BW1
Frequently Asked Questions
What is the ALpHA® BW1 Polypropylene Microfiber Filter?
The ALpHA® BW1 Polypropylene Microfiber Filter is an absolute rated, pleated depth-type filter cartridge constructed entirely of FDA-approved polypropylene. It features a self-bonded microfiber media with a tapered pore structure consisting of multiple layers of successively finer fibers. This design provides high dirt holding capacity, superior flow rates at low pressure drops, and submicron particle retention, making it optimized for bottled water filtration applications.
What applications is the ALpHA® BW1 Polypropylene Microfiber Filter used for?
The ALpHA® BW1 filter is optimized for bottled water applications as a prefilter providing an absolute barrier. More broadly, ALpHA® polypropylene filters are used in water purification, chemicals, biologicals, pharmaceuticals, food and beverage, cosmetics, diagnostics, and other industries requiring high-quality filtration and contaminant removal.
What specifications or sizes are available for the ALpHA® BW1 Polypropylene Microfiber Filter?
ALpHA® polypropylene filter cartridges, including the BW1, are available with absolute particle retention ratings ranging from 0.45 to 70 microns. They come in a range of lengths and styles compatible with most standard filter housings. All components are constructed of FDA-approved polypropylene with thermal bonding and various O-ring/gasket seal options such as Buna, EPR, silicone, and Teflon® variants.
What makes the ALpHA® BW1 Polypropylene Microfiber Filter unique?
The ALpHA® BW1 filter’s uniqueness lies in its self-bonded polypropylene microfiber media with a tapered pore structure composed of multiple layers of successively finer fibers. This structure provides a fixed, absolute rated pore size with high dirt holding capacity, superior flow rates, and low pressure drop. The thermal bonding of media to end caps ensures chemical compatibility and minimal extractables, making it biologically inert and suitable for food and beverage applications.
Is the ALpHA® BW1 Polypropylene Microfiber Filter suitable for regulated biopharmaceutical manufacturing?
Yes, the ALpHA® BW1 filter is suitable for regulated biopharmaceutical manufacturing. It is manufactured in conformance with cGMP, meets USP Class VI plastics requirements including biological reactivity tests, and has bacterial endotoxin levels below 0.5 EU/mL as determined by the Limulus amebocyte lysate (LAL) test. All materials are FDA approved for food contact per 21 CFR 177 and comply with European Commission directives.
What other products are commonly used with the ALpHA® BW1 Polypropylene Microfiber Filter?
Commonly used complementary products with the ALpHA® BW1 filter include upstream single-use systems such as Single-Use Systems, M-Flex® TPE Tubing, and BioFlex® Fluid Path Assemblies. Downstream accessories like the SGT (Single-Use Gauge Tee) are also commonly integrated.
