Whatman Grade 54 hardened low ash quantitative filter paper for Büchner funnel and Hirsch funnel filtration enables fast vacuum suction filtration for recrystallization applications.
This hard, smooth, high wet-strength Grade 54 fast filter paper enables collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet.
Fast Filters for Vacuum Filtration
- Higher nominal particle retention rating (22 µm) than comparable Buchner funnel filter papers
- Fast filtration speed (Herzberg filtration speed 39 s)
- High purity (0.015% ash maximum)
- Acid-treated for high wet-strength and chemical resistance
- Hardened to minimize fiber shedding
Whatman low ash hardened filter paper for quantitative analysis is available in three grades. All three are designed for use in gravity and vacuum suction filtration in Büchner and Hirsch funnels.
| Whatman Product Code | 1454-150 |
| Type | Ashless |
| Material | Cotton |
| Filter Media | Cellulose |
| Grade | 52 |
| Size | 150 mm Diameter |
| Typical Particle Retention in Liquid | 22 µm |
| Thickness | 185 µm |
| Basis Weight | 90 g/m^2 |
| Ash Content | ≤0.015% |
| Air Flow Rate | 3 s/100 mL/in^2 |
| Water Flow Rate | 453 ml/min |
| Alpha Cellulose Content | ≥98% |
| Format | Circles |
| Pack Size | 100 |