Whatman
Grade 41 Quadrant Folded Filter Paper, 125mm Circle, 500 Pk SKU: 10380205

Quadrant Folded Filter Paper

• Quadrant folded filter paper saves the user valuable time
• Quadrant folded filter paper provides ease of use when undertaking repetitive or multiple analyses

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 um 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 are suitable for quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates.

Grade 41 filters are also commonly used in preparing solid environmental samples (e.g., soils, sludges) for metals analysis after nitric acid digestion. Grade 41 is available in a convenient, disposable, 47mm filter funnel with a 250ml capacity. The 47mm diameter filter can be easily removed for further analysis or culturing.

Diameter

125mm

Grade

41

Material

Cellulose

Pack Count

500

Pore Size (µm)

20

Sterility

Nonsterile

Wetability

Hydrophilic