GE Whatman Quantitative Papers: Ashless Grade 40 are produced under carefully controlled conditions to ensure low ash levels with progressively increasing wet strengths. Grade 40 is a classic, general purpose paper with medium speed and retention. Typical applications include gravimetric analysis for components in cements, clays, iron and steel products; as a primary filter for separating solid matter from aqueous extracts in general soil analysis and pure clean-up prior for AA spectrophotometry.
Ash levels of 0.007%
Well suited for gravimetric analysis, AA spectrophotometry, IR analysis, general soil analysis or other applications requiring a low-ash paper
Specifications for Whatman® Quantitative Papers: Ashless Grade 40