| 摘要 |
Systems and methods that can be used to detect target materials in a suspension are disclosed. A suspension suspected of containing a target material is added to a tube, and a programmable float is added to the same tube. In one aspect, the mass of the float may be programmed by selectively adding one or more objects to the float interior so that when the tube, float and suspension are centrifuged together to separate the various materials of the suspension into layers along the axial length of the tube, the float is positioned at approximately the same level as a layer that contains the target material. The float expands the axial length of the layer between the float outer surface and the inner surface of the tube. |
