该分选柱的基质由铁磁性的球体组成，球体表面覆盖一层亲细胞的塑胶薄层，确保快速温和地分选细胞。该分选柱是无菌包装的，可用于分选真核细胞、细菌、病毒和小于30μm的亚细胞物质。需要一个MS分选柱适配器（MS Column Adapter）才能将MS分选柱安装到VarioMACS或SuperMACS分选器上，SuperMACS II 分选器配备有MS、LS及LD分选柱适配器。
Background information
The column matrix of the MS Columns is composed of ferromagnetic spheres, which are covered with a cell-friendly coating allowing fast and gentle separation of cells. When placed in the magnetic field of a MACS Separator, the spheres amplify the magnetic field by 10,000-fold, thus inducing a high gradient within the column. This is crucial for isolation of cells which are only minimally labeled with MACS MicroBeads, leaving enough epitopes free for concurrent antibody staining. The space between the spheres is several times larger than primary and most cultured cells. This allows the cells to freely flow through the column. Magnetically labeled cells are held in suspension within the column and do not actually “bind” the column matrix. This suspension minimizes stress on the cells and allows for efficient sterile washing by avoiding cell aggregation.

MS Columns can be used to separate material less than 30 µm in size. The columns are individually packed in a sterile way.