Patent ID: 8771614

Claim:
A fluid processing device for use in a centrifuge comprising: a) a first holder form-fit to the shape of a first tube and having a first stopper for holding said first tube; said first tube having a first cross section; and b) a second holder form-fit to the shape of a second tube and having a second stopper for holding said second tube; said second tube having a second cross section that is different from said first cross section; and c) a first container having a first container volume for holding a fluid, the first container being rigidly connected with the first holder and the second holder whereby said first holder is arranged with respect to said first container so that a fluid flowing through said first tube flows into said first container for being collected within the first container volume, wherein said first holder has a cylindrical shape and extends to a first stopper plane defined by said first stopper, wherein said second holder has a cylindrical shape and extends to a second stopper plane defined by said second stopper, wherein said first container has an inner surface that adjoins to said second holder.