100 шт., бумажные фильтры для кофе, 1-2/2-4 чашки
US $0.70-$1.25
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Material | Cotton fibre |
Shape | Round |
Diameter | 20 / 24 / 25 / 30 / 32 / 35 / 40 / 45 / 49.5 cm (can be customized) |
Fast: Aperture 10-12 μm, (speed 25~35s) | |
Medium: Aperture 7-8 μm, (speed 50~60s) | |
Slow: Aperture 3-4 μm, (speed 80~90s) | |
Qualitative analysis filter paper generally has a large amount of residual ash, which is only used for general qualitative analysis and for filtering suspended matter in precipitation or solution, but can not be used for quality analysis. |