| 摘要 |
The invention refers to a filter ( 23, 24 ) a cartridge ( 9 ) containing a particulate material ( 20 ), a use of the filter and a system for preparing a liquid solution. The cartridge ( 9 ) includes an inner space ( 10 ) for housing the particulate material ( 20 ), an inlet ( 21 ) arranged to permit the introduction of a liquid into the inner space, and an outlet ( 22 ) arranged to permit discharge of liquid from the inner space. The filter ( 23 ) is arranged at the outlet ( 22 ) to permit passage of the liquid in a filter direction (x) through the filter but to prevent passage of the particulate material through the filter. The filter includes at least one slit-shaped opening, which has a first extension and a second extension being substantially perpendicular to the filter direction (x). The second extension is significantly shorter than the first extension. |
