These cellulose filters are used in qualitative analytical techniques to determine and identify materials.
| Code | Whatmans Grade 4 |
- Pre-pleated qualitative filters are also available, which give improved flow rate and increased loading capacity compared to equivalent flat filters.
Grade 4 (20-25 µm)
- Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminium hydroxide.
- Very useful as a rapid filter for routine clean-up of biological fluids or organic extracts during analysis.
- Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.
Available in the following Sizes:
- 5mm (100 P/Box)
- 55mm (100 P/Box)
- 70mm (100 P/Box)
- 90mm (100 P/Box)
- 110mm (100 P/Box)
- 125mm (100 P/Box)
- 150mm (100 P/Box)
- 185mm (100 P/Box)
- 240mm (100 P/Box)
- 270mm (100 P/Box)
- 320mm (100 P/Box)
Due to the continuous development of our products, the goods supplied may vary in detail to that illustrated on this Website.
