Fisherbrand™ Qualitative Grade Plain Filter Paper Circles and Sheets - P4 Grade

Ideal for clarifying and removing particles of 1µm and larger, and in applications that do not require a low-ash or ashless paper

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Catalog No. 09-803-6D

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    Specifications

    Diameter (Metric) 9cm
    Grade P4
    For Use With (Application) General purpose: slightly slower, more retentive than P5. Retains MgNH4PO4, silver sulfide, cadmium sulfide. In air monitors, collects particulates and chromic acid mist
    Porosity Medium Fine
    Particle Retention 4 to 8μm
    Flow Rate Slow: 25mL/min.
    Format Circle

    • Cellulose fiber papers
    • Available as circular, rectangular, and square sheets
    • Good wet strength
    • Suitable for gravity, vacuum filtration systems and low suction filtration
    • Particle Retention: 4–8µm
    • Medium-fine porosity
    • Filtration Speed: Herzberg, 730 sec.
    • Flowrate: Slow—25mL/min.
    • Surface: Smooth

    Not suitable for nitrogen analysis.

    Applications:

    General purpose: slightly slower, more retentive than P5. Retains MgNH4PO4, silver sulfide, cadmium sulfide. In air monitors, collects particulates and chromic acid mist.

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