Filter paper circles, MN 1640 md, Quantitative, Medium to slow (55 s), Smooth
MN1640md is a wet-strengthened, ashless filter paper, which is slightly more retentive than MN1640m with corresponding increase in filtration time. The smooth surface allows fiber-free filtration, even for highly acidic and basic media.
| Format | Filter paper circles |
| Grade | MN 1640 md |
| Surface | Smooth |
| Basis weight | 85 g/m² |
| Thickness | 0.2 mm |
| Filtration speed description | Medium to slow |
| Filtration speed | 55 s |
| Quality | Quantitative |
| Material | Cellulose |
| Ash content | < 0.01 % |
| Color | White |
| Retention capacity | 4–7 µm |
| Wetstrength | Strong |
| Diameter | 55 mm, 70 mm, 90 mm, 110 mm, 125 mm, 150 mm, 185 mm, 240 mm, 270 mm, 320 mm |
| Scope of delivery | 100 filters per pack |
| Hazardous material | No |
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