Filter paper circles, MN 640 d, Quantitative, Slow (140 s), Smooth
MN640d is an ashless, slow filter paper with very fine particle retention. Standard paper for critical gravimetric analysis of fine precipitates like barium sulfate or metastannic acid.
| Format | Filter paper circles |
| Grade | MN 640 d |
| Surface | Smooth |
| Basis weight | 85 g/m² |
| Thickness | 0.17 mm |
| Filtration speed description | Slow |
| Filtration speed | 140 s |
| Quality | Quantitative |
| Material | Cellulose |
| Ash content | < 0.01 % |
| Color | White |
| Retention capacity | 2–4 µm |
| Wetstrength | Light |
| 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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