| Cat. No. | Ø mm | PK | |
|---|---|---|---|
| 7697810 | 55 | 100 | |
| 7697811 | 70 | 100 | |
| 7697812 | 90 | 100 | |
| 7697813 | 110 | 100 | |
| 7697814 | 125 | 100 | |
| 7697815 | 150 | 100 | |
| 7697816 | 185 | 100 | |
| 7697817 | 240 | 100 | |
| 7697818 | 42.5 | 100 | |
| 7699051 | 210 | 100 |
The filter papers for quantitative analyses are made of 100 % cotton linters. For maximum purity the papers are acid-washed and cleaned with demineralized water. Ash content is 0.007 %.
Grade 1015, medium to slow filtering, particle retention 5-8 µm, filtration speed 50 s according to DIN 53137, basis weight 84 g/m², thickness 0.16 mm
For fine precipitates (magnesium phosphate, ammonium phosphate, calcium oxalate, coarser flaked forms of barium sulphate).
Alternatives