d_sample_prep_dp_ss
| CODE | DESCRIPTION | CATEGORY | FROM_YEAR | TO_YEAR |
|---|---|---|---|---|
| MB01 | No filtration | Filtration | 1984 | |
| MB02 | Filtration with membrane filter 0,45 µm | Filtration | 1984 | |
| MB03 | Filtration with membrane filter 0,45 µm and prefiltration with glass fibre filter | Filtration | 1984 | |
| MB04 | Filtration with paper filters (Schwarzband) | Filtration | 1984 | |
| MB99 | Other filtration method | Filtration | 1984 |