The quantitative or ashless filter papers are made with 100% high quality cotton linter fibres, which go through a severe chemical process. They have been washed out with a specific acid treatment and finally cleaned from impurities with demineralised water. This process allows reaching an ash content below 0.01%. Fast filtration fat-free quantitative filter paper.
Equivalent to Whatman grade 589/4
Recommended for fast filtration and for determination of grease content in dairy products