Magnetic separation rack

A magnetic separation rack for isolating magnetically labelled particles from a non-magnetic medium comprising a body portion having:

• an array of sample vessel retaining portions, whereby each sample vessel retaining portion comprises:
• a first aperture formed in an upper surface of the body portion of a first predetermined width;
• a second aperture formed in a lower surface of the body portion of a second predetermined width;
• and
• a passage extending through the body portion between the first aperture and the second aperture, wherein the first predetermined width of the first aperture is the same as or different to the second predetermined width of the second aperture;
• and
• a plurality of magnetising portions arranged within the body portion such that at least two magnetising portions are circumferentially spaced about each sample vessel retaining portion.

A magnetic separation rack for isolating magnetically labelled particles from a non-magnetic medium comprising

• a body portion having:
• an array of sample vessel retaining portions,
• a plurality of magnetising portions arranged within the body portion such that at least two magnetising portions are circumferentially spaced about each sample vessel retaining portion;
• an aperture defining element having:
• a plurality of aperture defining portions wherein each aperture defining portion comprises a plurality of aperture segments of different predetermined sizes;
• whereby, the aperture defining element and the body portion are relatively movable between a range of positions and at any given position a selected aperture segment from each aperture defining portion is aligned with each sample vessel retaining portion.