| 摘要 |
<p>Apparatus for stirring liquid such as a culture medium comprising a flask, buoyant, magnetically attractable stirrer means for stirring liquid medium in the flask and means for rotating said stirrer means, characterised by means (30,40) for guiding the stirrer means (24) for rotation about an axis as the stirrer is rotated by said rotating means and at different levels of liquid in said flask, and by means (26) for permitting an unobstructed flow of liquid in a region along the axis of the flask extending upwardly from the bottom thereof.</p> |
