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Thumbnail Filmstrip of Grade 52 Filter Paper, General, 240mm Circle, 100/Pk Images
Whatman Grade 52 is a general-purpose filter paper for quantitative analysis in Büchner funnel and other vacuum filtrations. The acid-hardened surface and low ash content enable efficient precipitate recovery.
Features:
- Manufactured from high-quality cotton linters and treated to remove trace metals
- High wet-strength and chemical resistance
- Nominal particle retention of 7 µm
- Medium flow rate (Herzberg filtration speed 235 s)
- High purity (0.015% ash maximum)
- Compatible with Hirsch or Büchner funnel applications
Büchner Funnel Vacuum Filtration
The quality of analysis resulting from vacuum filtration using a Hirsch or Büchner funnel relies on using a high-quality filter that avoids introducing artifacts into measurement. Grade 52 hardened filter paper is acid-treated to prevent fiber shredding during vacuum filtration or precipitate collection.
| Whatman Product Code | 1452-240 |
| Type | Ashless |
| Material | Cotton |
| Filter Media | Cellulose |
| Grade | 52 |
| Size | 240 mm Diameter |
| Typical Particle Retention in Liquid | 7 µm |
| Thickness | 175 µm |
| Basis Weight | 96 g/m^2 |
| Ash Content | ≤0.015% |
| Air Flow Rate | 15 s/100 mL/in^2 |
| Water Flow Rate | 66 ml/min |
| Alpha Cellulose Content | ≥98% |
| Format | Circles |
| Pack Size | 100 |
- Diameter
- 240mm
- Grade
- 52
- Material
- Cotton
- Pack Count
- 100
- Pore Size (µm)
- 7
- Sterility
- Nonsterile
- Wetability
- Hydrophilic