Description
Ahlstrom® Qualitative Filter Paper, Grade 642, 15 cm, 2.0 micron, 100/PK, 6420-1500
Features:
- 2 ?m, Medium Speed
- Has finer particle retention than Grade 601 but with slightly lower filtration speed
- Higher absorption than Grade 601
- Used in general laboratory applications to retain particles above 2 ?m in size
- Also found in agricultural and environmental laboratories for plant growth trials, soil testing, and air analysis for monitoring specific contaminants and in filtration of organic and sulfide precipitates.
- Non wet-strengthened
- Suitable for quadrant folded or gravity flow applications
- Equivalent to Whatman® Grade 2
Specifications
| Range | Particle retention: 2 micron |
|---|---|
| Range | Filtration speed (Herzberg): 229 sec/100 mL |
| Range | Flow Rate: 30 mL/min |
| Range | Weight: 95 g/sq m |
| Material | Cotton fiber alpha-cellulose |
| Other | Surface texture: smooth |
| Other | Ash content: 0.06% |
| Dimensions | 15.0 cm diameter, thickness: 0.2 mm |
| Manufacturer | Ahlstrom |
| Model No | 6420-1500 |