Grade 41 Circles, 125mm 100/pk

Cytiva's Whatman Grade 41 environmental pollution papers are among the fastest filter papers in the Whatman ashless range. This gravimetric filter is well suited for quantitative analysis of soil and air.

Extremely low ash content (0.007% ash maximum)
20 µm nominal particle retention rating
Fast filtration speed (Herzberg 54 s)
Commonly used for routine air pollution analysis and soil pollution analysis
Aside from Grade 41 environmental pollution papers, Whatman quantitative paper comes in a variety of particle retentions, filtration speeds, and filter thicknesses to provide you with the appropriate filter for your precipitate. Also see our hardened ashless grades for analysis requiring the use of strong acids or bases.

Fast ashless paper for pollution analysis
Whatman Grade 41 filters from Cytiva's business are suitable for quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates.