These filter papers are especially suitable for qualitative analyses that require a low ash content. The grades 292 and 292a have furthermore a low nitrogene and nitrate content and the grades 131 and 132 a low sodium and phosphate content.
They are available in different formats as in rolls, sheets, discs and folded filters.
Specifications of the different paper grades
|
| Grade |
Weight (g/m²) |
Thickness (mm) |
Particle-Retention |
Filtration (sec.) |
| 292 |
87 |
0,18 |
5-8 |
60 |
| 292 a |
97 |
0,19 |
4-7 |
97 |
| 131 |
80 |
0,16 |
3-5 |
100 |
| 132 |
80 |
0,17 |
5-7 |
55 |
|
