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
• Weight: 82g/m²
• Thickness: 0.16mm
• Pore size: 8 - 12µm
• Filtration speed: 20s
• Available as plain or folded discs