Used across pharmaceutical, agrochemical, and research industries, the Grade 40 Circles, 12.7 mm from Whatman serve as a versatile tool for filtration purposes. These circles offer a medium speed and retention, making them suitable for gravimetric analysis of various components in diverse materials such as cements, clays, and iron and steel products. They also function effectively as primary filters for separating solid matter from aqueous extracts in general soil analysis. Additionally, these filter papers are useful for quantitative determination of sediments in milk and as a pure analytical grade clean-up filter for solutions prior to atomic absorption spectrometry (AAS) analysis. With their UNSPSC classification under laboratory equipment, they cater to a wide range of applications within the scientific community.

• Category: Quantitative Filter Papers
• UNSPSC 13.5: 41104929
• Brand: Whatman