Whatman™ Quantitative Filter Paper: Grade 42 Circles Available on GSA/VA Contract for Federal Government customers only.

Filters and retains extremely small particles. Whatman™ Quantitative Filter Paper: Grade 42 Circles are suitable for processes that require ashing.

Manufacturer: Whatman™ 1442125

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Catalog No. 09-855D

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    Thickness (Metric) 200μm
    Porosity Fine
    Flow Rate Slow
    Quantity 100Pack
    Material High-quality Cotton Linters
    Pore Size (Metric) 2.5μm
    Diameter (Metric) 125mm
    For Use With (Application) Highly retentive, for very fine precipitates. Normal loading; limited wet strength. Laboratory standard for critical gravimetric analysis
    Grade 42
    Format Circle

    Ashless grades are very pure filters suitable for a wide range of critical analytical filtration procedures. Whatman™ quantitative filter papers are designed for gravimetric analysis and the preparation of samples for instrumental analysis.

    • Ashless: 0.007% ash maximum
    • Fine (2.5 µm) nominal particle retention rating, eliminates large particles that might otherwise interfere with sensitive instrumentation
    • Herzberg filtration speed of 1870 s
    • Commonly used as a calcium carbonate filter

  • Description & Specifications

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