Five stage internal cell separator

Abstract From the Canadian patent

Cells are normally separated by velocity sedimentation and/or density gradient centrifugation counter current distri-, bution or selective agglutination. The cells may also be separated using a multi-sectioned plastic sleeve defined by a plurality of plastic cylinders with screens and O-rings therebetween and a retaining plate at the top end of the cylinders. These methods present various problems including a large variation in the sizes of cells isolated in any fraction, high costs of materials and/or, exposure of the cells to air immediately following separation. These problems are overcome by means of a simple cell separator which permits separation on the basis of size and which is …