主权项 |
1. A system for holding sample tubes, the system comprising:
a top plate defining a first plurality of holes, each of the first plurality of holes being a through hole through the top plate and sized for accommodating an outer diameter of a respective sample tube; a bottom plate defining a second plurality of holes, each of the second plurality of holes sized to accommodate a tip of a respective sample tube, wherein the first and second pluralities of holes are positioned to cooperatively hold the sample tubes in a pair of parallel rows; and a removable magnet holder configured to slide between the top plate and the bottom plate and between the two rows of sample tubes, the magnet holder holding a plurality of magnets that, when the magnet holder is fully inserted between the rows of sample tubes, align with the sample tubes in the parallel rows. |