Product description
Absolute rated polypropylene melt blown depth filter cartridge for critical liquid filtration
The polypropylene melt blown depth filter cartridge – absolute is designed for filtration applications where defined, repeatable and validated particle removal is essential. Manufactured from 100% polypropylene using an advanced melt blown production process, this cartridge delivers true absolute filtration performance with a filtration efficiency of 99.98% at the stated micron rating.
The multi-layer, gradient density fibre structure ensures contaminants are retained throughout the full depth of the cartridge while maintaining a low pressure drop and long service life. This makes the cartridge suitable for demanding industrial and process filtration applications.
Filtration principle
The cartridge is produced using a controlled melt blown process that creates a multi-layer depth filtration structure with asymmetric pore distribution.
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Process liquid flows from the outside to the inside of the cartridge
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Larger particles are retained in the outer layers
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Finer particles are progressively captured towards the core
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Contaminants are retained throughout the full depth of the media
This filtration principle provides:
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absolute rated particle retention
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high dirt holding capacity
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stable and predictable pressure drop
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consistent filtration efficiency over the service life
Absolute filtration performance
These cartridges are absolute rated and designed to achieve a filtration efficiency of 99.98% at the specified micron rating.
Key performance characteristics include:
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true absolute micron ratings
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repeatable and validated filtration performance
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reliable contaminant control for critical processes
This ensures dependable performance where nominal filtration is not sufficient.
Design and construction
The cartridge consists of a continuously formed melt blown structure manufactured entirely from polypropylene.
Typical design features include:
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multi-layer melt blown polypropylene depth media
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gradient density fibre structure
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thermally bonded fibres without adhesives or binders
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high porosity for low pressure drop
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rigid structure for mechanical stability
The design maximises contaminant loading while maintaining high filtration efficiency.
Materials of construction
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Filter media: Polypropylene
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Core:
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Polypropylene
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Optional stainless steel support
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End caps: Polypropylene
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Sealing options:
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EPDM
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Silicone
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Viton®
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Nitrile
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FEP encapsulated
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All materials are selected for chemical resistance, cleanliness and suitability for industrial process filtration.
Operating conditions
Typical operating conditions include:
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absolute micron ratings across a wide filtration range
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continuous operating temperatures compatible with polypropylene media
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short-term exposure to elevated temperatures
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defined maximum differential pressure limits
Exact pressure and temperature limits depend on micron rating, cartridge length and operating conditions and are defined during configuration.
Key benefits
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Absolute filtration efficiency of 99.98%
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Defined and repeatable particle removal
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High dirt holding capacity
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Long service life
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Low and stable pressure drop
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100% polypropylene construction
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Broad chemical compatibility
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Suitable for critical process applications
Typical applications
These cartridges are commonly used in:
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pharmaceutical and biotechnology processes
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fine chemical filtration
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electronics and semiconductor manufacturing
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food and beverage processing
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process water and utilities
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coatings, inks and specialty chemicals
Configuration options
Available configuration options include:
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wide range of absolute micron ratings
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multiple standard cartridge lengths
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double open end and single open end configurations
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222 and 226 O-ring connections with or without fin
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multiple sealing material options
This allows the cartridge to be precisely matched to housing design and process requirements.
Compliance and quality
Polypropylene melt blown absolute cartridges are manufactured under controlled production conditions to ensure consistent quality, traceability and performance. The construction supports use in validated and critical filtration processes.