Whatman™ Grade 4 Qualitative Filter Paper

Provides a variety of filtration applications when fine particulate collection is not required. Whatman™ Grade 4 Qualitative Filter Paper can be used as a rapid filter for biological clean-up or during extraction of organic materials.

Manufacturer: Whatman™ 1004-042

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Catalog No. 09-825J

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    Quantity 100Pack
    Diameter (Metric) 42.5mm
    Grade 4
    Material Cellulose
    Thickness (Metric) 210μm
    Pore Size (Metric) 20 to 25μm
    Particle Retention Coarse particles and gelatinous precipitates
    Flow Rate Fast
    Format Circle

    Used in air-pollution monitoring and routine cleanup of biological fluids

    • Retains coarse particles, gelatinous precipitates
    • Particle retention: >20–25µm
    • Porosity: Coarse
    • Filtration speed†: Herzberg, 37 sec.
    • Surface: Smooth

  • Description & Specifications

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