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  • Cellulose Acetate Membrane Filter

    What is Cellulose Acetate?

    Johnson Test Papers’ cellulose acetate membranes are composed of pure cellulose acetate modified to provider researchers with high flow rates, thermal stability with low protein and enzyme binding capacity and the lowest binding filters available which minimises sample loss and sample contamination. These hydrophilic membranes are a very reliable material therefore excellently suited for use in pressure filtration devices and both aqueous and alcoholic media. They also have high solvent resistance, particularly to low molecular weight alcohols. They have a very low aqueous extract of < 0.1 % and are available in the common pore sizes. The membrane with 0.2μm is the filter of choice for sterile filtration and clarification of aqueous solutions (pH 4 - 8), such as nutrient media, buffers and sera. It can be sterilized by most common methods without sacrificing membrane integrity. Cellulose acetate membrane is also compatible with hydrocarbons and oil. Due to their high chemical resistance, cellulose acetate membrane filters from Johnson Test Papers reliably prepare liquid scintillation cocktail for scintillation counter measurement. Additionally, these membranes present high physical strength and dimensional stability (130 psi) and can filter hot liquids and gases up to 180 °C.

    For additional information on OEM specific applications, Johnson Test Papers has the product breadth and flexibility to meet your needs, as well as the quality standards to help ensure your success. Contact us to discuss application requirements, request free product samples and order products.


    • Bacterial removal
    • Biosensors
    • HPLC flowing particle removal
    • Drug filtration
    • Organic solvents filtration
    • IV filters
    • Lateral flow assays
    • Particulate removal
    • Sterile filtration of aqueous solutions (nutrient media, sera, buffers)
    • Clarification and sterile filtration of biological fluids
    • Sterile filtration of proteins and enzymes
    • Receptor binding studies
    • Diagnostic cytology
    • Sterilisation of tissue culture media


    • Ideal for use in general filtration or medical assays
    • High wick rates (lateral flow), substances move quickly through the membrane
    • Uniform pore structure provides consistent flow and diffusion rates
    • Superior strength, withstands aggressive handling or can be used with automated equipment without breaking or tearing
    • Exceptional sensitivity, detects low-level components
    • Lot-to-lot consistency, quality checks produce dependable results every time
    Sterilization USP Class VI Testing Thickness Extractable Maximum Operating Temperature Sealing Compatibility Pore Size Range
    Gamma Irradiation or Ethylene Oxide (EtO) Passed 80 ± 10μM <4% - Boilng Water 90°C Ultrasnoic, Heat 0.10 to 0.65μM
    Technical Specification
    Pore Size (μM) Minimum Bubble Point (Mpa) Typical Flow Rate (mL/min·cm²@0.2Mpa)
    0.22 0.29 3.4
    0.45 0.20 5.0