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%. Very slow filtration quantitative filter paper.
- Equivalent to Whatman grade 42
- Recommended for very slow filtration
- Weight: 84g/m2
- Thickness: 0.17mm
- Pore size: 2 - 4µm
- Filtration speed: 140s
- Supplied as plain discs
This product has met the following criteria to qualify for the following awards:
 | Sustainable Distribution & Packaging | - Country of origin has an Environmental Performance Index (EPI) greater than 60
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To find out more about our Sustainability Attributes, click here.