Ambr® CF Filter, Polyethersulfone 30 kD

The Ambr® CF Filter is a ready to use, fully disposable 10 cm² crossflow ultrafilter that is designed for high throughput membrane screening and formulation development. The Ambr® CF Filter is available with two membrane materials and in a wide variety of MWCO’s. The Ambr® CF Filter is designed to be used with the Ambr® Crossflow system.

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*Custom/bulk order quotes are provided within 72 hours of request.

PESU Polyethersulfone membranes are membrane polymers that are well established in the biotechnological and pharmaceutical industries. The PESU membrane is a stable polymer that features a broad pH and temperature range. Its wide temperature range makes it possible to sterilize the membrane by either steam or autoclaving. Membrane regeneration, storage and depyrogenation can be accomplished by using NaOH even at elevated temperatures. Because of these features, the PESU membrane is ideally suited for biotechnological applications. PESU cassettes are available in 0.1 µm. Polyethersulfone membranes are designed for applications in the biotechnological and pharmaceutical industries.

They can be used to remove the following cells from liquids:

  • Mammalian cells
  • Clostridia
  • Yeasts
  • Salmonella
  • Mycoplasma reduction

Polyethersulfone can withstand in-line steam sterilization without any loss of integrity or changes in membrane retention. Membrane retention is unaffected by re-use.


  • Industry
    Pharma / Biotech  


  • Filtration Area
    10 cm²  
  • Flow Channel Geometry
    Screening Device  

General Specifications

  • Cassette Format
    ambr® CF filter  
  • Filter Class
  • Filter Format
  • Ultrafilter
    30 kD Polyethersulfone Ultrafilter Membrane  

Materials of Construction

  • Membrane Material
    Polyethersulfone (PES)  

Operating Conditions

  • Maximum Inlet Pressure
    3 bar  
  • pH Stability
    pH 2 – 14  

Physicochemical Information

  • MWCO
    30 kD  

Product Information

  • Brand
    Ambr® CF Filter  
Ambr® Crossflow
Item no.

Study factors for manufacturability

Collect important information about the behaviour of the molecules in downstream processing already in an early stage

Automated, parallel trials

Up to 16 channels can be managed by one control station

Lowest process volumes

Small scale screening with 10 cm² membrane area | 5 mL recirculation volume

Flexibility of two different process scales

Mid-scale screening is also possible with Sartocon® Slice 50 which has 50 cm² membrane area