Quantitative Filter Paper Ashless Grade 74(=40)

Ashless Grade (Ash 0.007%)

This standard ashless grade is suitable for both gravimetric analysis and sample preparations where a high-purity filter is preferred in the preparation of samples for use in analysis involving instrumental techniques

It is used for gravimetric analysis of numerous components (e.g.: cements,copper, clay, bismuth, silicon, iron) found in heavy industries such as construction, mining or steel. Grade 74 is also used as a high purity filter for speedy filtering of trace elements such as silver chromate, lead sulfate, zinc and ammonium hydroxides. Grade 74 is also found in general soil analysis for separating solid from aqueous extracts.