Deskripsi
Whatman 1441-090 Kertas Saring No. 41 90 mm
Whatman 1441-090 Kertas Saring No. 41 90 mm
The fastest ashless filter paper, recommended for analytical procedures involving coarse particles or gelatinous precipitates (e.g., iron or aluminum hydroxides). Also used in quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates. The 47 mm Grade 41 filter can be easily removed for further analysis or culturing.
Typical Properties
| Description | Fast |
| Particle Retention in Liquid (μm) | 20 |
| Filtration Speed (approx) Herzberg (s) | – |
| Normal ash content (%) | 0.007 |
| Typical Thickness (μm) | 215 |
| Basis Weight (g/m2) | 85 |
| Typical water flow rate (ml/min)2 | 254 |
| Nominal air flow rate (s/100 mL/in2) | 4 |
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