Whatman – Quantitative Filter Paper Grade 41 Circles

Specifications :

: ASTM, 12 seconds; Herzberg, 54 seconds
: 20μm
: Ashless
: 100Pack
: High-quality cotton linters
: Coarse
: 150mm
: Fast
: 215 μm


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Whatman – Quantitative Filter Paper Grade 41 Circles

Use for quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates or for quantitative air pollution analysis. Whatman™ Quantitative Filter Paper: Grade 41 Circles are commonly used in preparing samples for metal analysis after nitric acid digestion.

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.

  • Extremely low ash content (0.007% ash maximum)
  • 20µm nominal particle retention rating
  • Fast filtration speed (Herzberg 54 s)
  • Commonly used for routine air pollution analysis and soil pollution analysis
  • High-purity filters for quantitative analysis

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