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注意事项:
Filtration rate: the time required to filter 10 ml of distilled water at 20 °C through a free-hanging, fully-wetted disc filter with a diameter of 110 mm folded in quarters. Expressed in seconds (per mm).
Grade | Basis weight (g/m²) | Thickness (mm) | Filtration rate (s)* |
---|---|---|---|
FT 55 | 55 | 0.15 | 5 |
34/N | 60 | 0.20 | 4 |
67/N | 60 | 0.20 | 15 |
601/N | 65 | 0.19 | 13 |
1602/N | 70 | 0.23 | 5 |
67/N | 70 | 0.23 | 15 |
1444 | 70 | 0.27 | 18 |
603 | 75 | 0.25 | 8 |
603/N | 75 | 0.25 | 8 |
34/N | 80 | 0.25 | 5 |
226 (blue) | 80 | 0.25 | |
21/N | 80 | 0.28 | 10 |
67/N | 80 | 0.33 | 14 |
5 H/N | 85 | 0.28 | 3 |
17/N | 90 | 0.30 | 20 |
67/N | 90 | 0.33 | 13 |
33/N | 90 | 0.35 | 4 |
22/NS | 90 | 0.35 | 10 |
18/N | 100 | 0.35 | 25 |
37/N | 135 | 0.50 | 4 |
6 S/N | 145 | 0.55 | 12 |
67/N | 160 | 0.65 | 13 |
39/N | 180 | 0.65 | 5 |
39/N | 240 | 0.83 | 7 |
39/N | 300 | 0.95 | 5 |
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