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Whatman™ Grade 41 Quantitative Filter Paper

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

Manufacturer: whatman™  1441-866

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Catalog No. 09-850Q

  • / Pack of 100 Each

Description & Specifications


Quantity 100Pack
Grade 41
Material High-quality Cotton Linters
Pore Size (Metric) 20μm
Length (English) 8 in.
Length (Metric) 203mm
Format Sheet
Thickness (Metric) 215μm
Porosity Coarse
Width (English) 10 in.
Width (Metric) 254mm
Diameter (Metric) N/A
Particle Retention Gelatinous precipitates and coarse particles
For Use With (Application) Metallurgy: iron and aluminum hydroxides. Air pollution monitoring. Normal loading; limited wet strength
Flow Rate Fast

Fast, ashless filter paper

  • 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


Accessories for Catalog Number: 09850Q

Item Mfr. No. Item Description Price Per Unit Quantity