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3. Extract the filter from the cavity.
4. With a non-abrasive mechanical instrument like a pipe cleaner or a brush, remove manually any
residual from the filter. Then rinse it with water.
5. Dry the filter with a dry cloth or paper.
6. Reinsert the filter in the cavity.
7. Reinsert the pivot inside the hole present in the middle of the filter.
The filter has only one correct position, with
the with the folded portion in
correspondence with the drain hole for the
reagents.