| Filtersystem | Nominativ, Singular | nominative case, singular | |
| Filtersystem | Genitiv, Singular | genitive case, singular | |
| Filtersystem | Dativ, Singular | dative case, singular | |
| Filtersystem | Akkusativ, Singular | accusative case, singular | |
| Filtersystemen | Nominativ, Plural | nominative case, plural | |
| Filtersystemen | Genitiv, Plural | genitive case, plural | |
| Filtersystemen | Dativ, Plural | dative case, plural | |
| Filtersystemen | Akkusativ, Plural | accusative case, plural |