| 摘要 |
The flask has a filtering unit (3) partly immersed in a cytological suspension, and having a basket forming filtering material web (4) whose periphery is fixed on the flask and center is connected to a tube. The tube extends towards an opening (2) of the flask and is associated to a position maintaining unit (8) in the flask, where the unit has arms with stop units. The tube allows the passage of a pipette for drawing the suspension. |
