Place the column in a clean microcentrifuge tube .
小心将液体的上清移至一新的微量离心管中，不要搅动收集管中的细胞残渣沉淀。
Carefully transfer the supernatant of the flow-through to a new microcentrifuge tube ( not supplied ) without disturbing the cell-debris pellet in the collection tube .
微量离心管