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MICRO & MEMBRANE FILTERS

Mini Cartridges

Compact filtration elements for small-volume and point-of-use process steps.

Explore the range

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PES Mini cartridges feature hydrophilic polyethersulphone membranes and polypropylene supports, offering high microbial retention, excellent flow rates, and low protein binding. Ideal for sterile filtration in small-batch pharma, ophthalmics, vaccines, and beverage lines, they provide reliable performance in critical low-volume applications requiring high purity and validated membrane integrity.

The PTFE Mini cartridge from DANMIL uses hydrophobic polytetrafluoroethylene membranes and polypropylene support for chemical and thermal resistance. Built for sterile filtration of gases, solvents, or aggressive fluids, it's ideal for lab fermenters, vent filters, and compressed air lines in pharma, food, and electronics where compact, cleanable solutions are needed.

POLY Mini cartridges integrate pleated polypropylene microfiber media in a compact format, offering solid particle retention and broad chemical compatibility. Used for prefiltration, sampling, and process protection, they’re ideal for pilot-scale, cosmetic, and specialty chemical applications requiring reliable solids removal without compromising footprint or operational flexibility.

DANMIL mini cartridges membrane are precision-built for sterile filtration in applications where full-size cartridges are impractical. Each filter features a compact body made from polypropylene supports and housings, ensuring broad chemical compatibility and mechanical durability. The media core, available in PES, PTFE, or PP microfiber, is securely bonded using infrared welding for seamless integrity. Every membrane unit undergoes integrity testing and is manufactured under ISO-class cleanroom conditions, guaranteeing reproducibility and product safety. With minimal hold-up volume, high filtration surface area, and a footprint optimized for confined installations, these cartridges offer maximum performance in minimal space. They are ideal for lab-scale trials, fill-finish lines, and sterile R&D workflows. 

  • Optimized for Tight Spaces: Miniaturized format designed for installations where full-sized filters won’t fit, such as isolators or benchtop rigs.
  • Validated Performance: Each membrane unit is integrity-tested and media-validated for critical applications in pharma, biotech, and lab settings.
  • Reduced Fluid Loss: Minimal internal volume ensures efficient product recovery, especially for high-value or limited-volume liquids.
  • Durable and Versatile: Constructed to handle CIP/SIP and chemical exposure in demanding environments.
  • Ready-to-use Configuration: Factory-assembled and pretested, reducing downtime and handling during integration.
  • PES Mini (Polyethersulphone): Sterile-grade membrane with low protein binding and high bacterial retention; suitable for aseptic processing and sensitive formulations.
  • PTFE Mini (Polytetrafluoroethylene): Chemically inert membrane ideal for aggressive solvents, acids, gases, or high-temperature use cases.
  • POLY Mini (Polypropylene Microfiber): Robust depth media for particle-laden fluids; excels in prefiltration and clarification prior to final filtration steps.
  • Small-scale Sterile Filtration: Used in lab or pilot-scale applications where batch volumes are low and precision is critical.
  • Final Fill and Critical Fluids: Ideal for terminal filtration of injectables, biologics, and ophthalmics in isolators and compact fill stations.
  • Utility and Prefiltration: Suited for water, buffer prep, and process fluid clarification where space-saving solutions are required.
  • Compressed Gas and Air Handling: PTFE Mini filters enable point-of-use filtration of clean air, nitrogen, and other inert gases.

Key specifications

DANMIL mini cartridges are engineered for reliability in tight-space environments while maintaining full-scale filtration integrity. Below is a summary of key performance metrics and design features.

Specification Value
Construction material  Polypropylene supports and housings 
Micron ratings available  Depends on media 
Max operating pressure  Liquid: 5 bar @ 24°C 
Temperature range  Max 60 C 
Regeneration/cleaning  Disposable; single-use only 
 
Lengths available  
Little / Half / Standard / Double 
Endcap configurations  Mini cartridge compatible fittings (not specified) 
Traceability / Testing   Cleanroom production with standard internal QA. Lot no on each element for traceability and each membrane filter is integrity tested. 
Certifications  FDA 21 CFR-177, USP Class VI, EU 1935/2004, LAL, cytotoxicity (per DANMIL standards) 

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