Patent ID: 7674433

Claim:
In combination a tube for storing micro-liter volumes and a multi-well plate having a top surface and a bottom surface and through bores having a substantially square cross section parallel to the top and bottom surfaces extending through the plate from the top surface to said bottom surface, said through bores for receiving one tube in a corresponding one of the through bores in said multi-well plate, the tube having first and second ends, the tube being open at the first end and a second closed end, the second end of the tube for engaging the bottom surface of the multi-well plate, the tube comprising: a body portion of substantially square cross section corresponding to the cross section of the through bores; a shoulder portion near said one end of the body portion and providing the open end of the tube, the cross section of the shoulder portion being greater than that of the body portion; and, a deformable formation having a cross section larger than the cross section of the bores providing a connector portion at the second end of the tube, said formation being deformable to fit through the through bore and to extend through the bottom surface to form a snap fit engagement with said bottom surface of the multi-well plate.