A new nitrocellulose membrane

    NEW! Whatman Fast Flow, High Performance (FF HP) nitrocellulose backed membrane. This new grade allows for easy swap-out of similar nitrocellulose membranes for lateral flow immunoassay tests and assay development.

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    Build a smarter diagnostic assay

    Choose from our wide selection of high performance, customizable components and solutions for immunoassay and molecular diagnostic applications when you partner with Cytiva.

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    Blood separation challenges

    Hemolysis, cell breakthrough, analyte binding…they all can prevent effective blood separation. Find out how to tackle them.

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    Customization options

    Cellulose and glass fiber media

    Manufacturing Properties Conversion Treatment
    Material
    • Cotton linter
    • Specialty wood pulps
    Manufacturing specifications
    • Airflow
    • Grammage
    • Thickness
    • Mechanical strength
    • Particle retention
    • Wicking rate
    • Filtration performance
    • Surface characteristics

    Grammage: 40–700 gsm (+/-10%)

    Thickness: 80–2600 µm

    		 Cutting
    • Sheet length: 430–790 mm
    • Sheet width: 460–1500 mm

    Slitting

    • Slitting: 6–1500 mm
    • Tolerances up to +/- 0.5 mm
    • Max rewind diameter: 1200 mm

    Punching

    • Circles: 10–500 mm diameter
    • Shapes and patterns possible

    Controlled impregnation

    Acid treatment

    Lamination

    Membrane media

    Manufacturing Properties Conversion Treatment
    Casting
    • Dry
    • Wet
    		 Specifications
    • Pore size
    • Thickness
    • Water flow rate
    • Capillary rise/flow time
    • Burst strength
    • Porosity
    • Protein binding
    • Leachables
    • Autoclavable
    • Bubble point
    • Flow-through
    • Scanning electron microscope use
    • Laser scanning microscope
    		 Cutting
    • Min: 10 x 10 mm
    • Max: 640 x 1200 mm

    Slitting

    • Precision slitting: 6–1500 mm
    • Tolerances up to +/- 0.5 mm
    • Max rewind diameter: 250 mm

    Punching

    • Circles: 6–500 mm diameter
    • Shapes and patterns possible

    		 Backing
    • Unbacked
    • Foil-backed
    • PTFE-backed

    Supported

    Impregnation

    Lamination

    Coloring

    Printing

    Sterilization
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