Quantitative filter paper circles, Whatman Grade 589/1
High-purity ashless filter paper made from pure cellulose for fast filtration of coarse precipitates in support of tests. Also known as Black Ribbon filters, the low ash content of these quantitative filters can be used for the Blaine test in the cement industry and as an ash content test filter for fooodstuffs.
Specifications:
- Surface: Smooth
- Particle retention in liquid: 12-25 µm (98 %)
- Filtration speed: 50 s
- Thickness: 0,190 mm
- Basis weight: 80 g/m2
- Ash content: 0,01 %
