WHA1441090

Whatman^® quantitative filter paper, ashless, Grade 41

circles, diam. 90 mm, pack of 100

• Synonym(s): Whatman filter, Whatman paper, Z241377, filter papers, paper filter
• UNSPSC Code: 41104900
• NACRES: NB.24

Properties

• material: circles ; cotton filters (high-quality cotton linters)
• packaging: pack of 100
• manufacturer/tradename: Whatman 1441-090; Whatman Article No. 28418016 (US reference)
• parameter: 0.22 psi wet burst; 54 sec/100 mL speed (Herzberg)
• diam.: 90 mm
• thickness: 220 μm
• ash: ≤0.007%
• pore size: 20-25 μm (Particle retention)
• basis weight: 85 g/m²

Description

General description

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.

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.

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, 47 mm filter funnel with a 250 ml capacity. The 47 mm diameter filter can be easily removed for further analysis or culturing.

Features and Benefits

• 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

Other Notes

Field of Use : For internal research use only. Products are not intended for diagnostic use or resale.

Legal Information

Whatman is a registered trademark of Cytiva