Round filters for quantitative analyses, grade 40, diameter 110 mm, 100 pieces

Whatman Grade 40 high-purity filters are general-purpose papers for quantitative analysis. Grade 40 filters are suitable for a variety of analytical filtration applications. High-purity filters support accurate analysis in applications sensitive to very low levels of background contamination and in gravimetric analysis where ash content might affect weight measurements of combusted samples.

• High-purity filters contain 0.007% maximum ash content
• Medium nominal particle retention rating of 8 µm
• Medium filtration speed (Herzberg 340 s)
• Particularly useful for gravimetric analysis
• Grade 40
• Diameter 110 mm