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Whatman™ Quantitative Filter Papers - Grade 40

Separates solid matter from aqueous extracts in soil analysis and collects atmospheric trace elements and radionuclides. Whatman™ Quantitative Filter Papers – Grade 40 also filter numerous components in cements, clays, iron, and steel products.

Manufacturer: whatman™  1440-047

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Catalog No. 09-800-969


Description & Specifications


Grade 40
Pore Size (Metric) 8μm
Format Circle
Thickness (Metric) 210μm
Diameter (Metric) 47mm
Flow Rate 25mL/min per 9cm dia.

High-purity filters support accurate analysis in applications sensitive to very low levels of background contamination and in gravimetric analysis where ash content might affect weight measurements of combusted samples.

  • Medium speed and retention
    • Quantitative determination of milk sediment
    • Use as a clean-up filter for solutions prior to atomic absorption (AA) spectrometry
    • Analysis of constituent components in cements, clays, iron, and steel products
    • Collection of trace elements and radionuclides from the atmosphere