Membrane Modules & Filters


Cellab is a specialist in developing and manufacturing single-use filter modules suitable for various applications in the medical and biotechnology industries. Based on our more than 20 years experience in membrane filtration and separation we understand the needs of our customers and how to develop customized product solutions.

We have on the one hand a broad range of filter membranes, housings and individual connection ports available and on the other we are able to develop customized solutions in partnership with our customers for virtually any single use membrane application.

Cellab Technology Filtration

Fig. 1: Overview of common material sizes and their suitable separation process


The heart of each filtration module is the membrane with its defined molecular weight cut-off. Based on the size of the substances targeted for separation, several types of membrane filters can be deployed (see figure 1).

In general Cellab offers individual filter solutions for ultrafiltration and microfiltration range. While microfiltration membranes are defined by pore sizes in the micrometer range, ultrafiltration membranes are more typically specified by their molecular weight cut-off (MWCO). The MWCO represents the maximum size of a molecule that can pass the membrane regardless of the molecular shape.

Hollow fiber membrane

Cellab Hollow fiber membrane

  • Asymmetric foam structure
  • Well defined pore size distribution guarantees consistent filter performance
  • Tailor-made geometries (inner fiber diameter and wall thickness)
  • Separation layer inside or outside
  • Membranes made of PSU, PES or PVDF

Flat membrane

Cellab Flat membrane

  • Uniform and exact pore size distribution guarantees consistent filter performance
  • Single-layer or multi-layer membrane packages available
  • Different membrane types for ultrafiltration or microfiltration
  • Membranes made of, PC or PET
  • Also regenerated cellulose available

We offer a range of standard membrane types with different characteristics:

  • Geometrical dimension
  • Membrane cut off / pore size
  • Filtration performance
  • Pressure resistance
  • Biocompatibility


The requirements for the housing design and housing material vary widely according to the individual application. E.g. flow rate, operating pressure, filter surface, but also chemical resistance or sterility requirements.
We offer a wide range of standard module housings from micro modules to large scale filter devices and have the ability to develop customized modules as required.


In general, every filter module is equipped with several external connection ports allowing an individual access to both sides of the membrane.
Hollow fiber modules are generally equipped with 2 extra capillary and two intra capillary connection ports, which allows a separate access to the space at the outside of the hollow fibers (side ports) and the inner space of the fibers (end ports).

Standard connections are either Luer Lock or hose barb ports. Upon request we can integrate additional ports or use different components (such as Hansen or John Guest connectors for example).
Cellab membrane filtration modules provide you the opportunity to enhance process efficiencies and economics with superior performance and consistent quality on the highest level.

Feel free to contact us for more information or for a personalized offer.

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