Patent ID: 6622578
Filing Date: 2003-09-23
Classification: B01L,G01N

Abstract:
A system of pipette tips for use in combination with an assembly having a plurality of plungers and a corresponding plurality of cylinders, to simultaneously dispense precise amounts of fluid into numerous receptacles, each cylinder having a mouth with a cylindrical upper portion and a frustum-shaped lower portion, the system of pipette tips comprising:a box having an upper surface with a plurality of holes therethrough; and a plurality of pipette tips retained within the holes of the box, each tip having an upper portion, a lower portion, a raised central portion located between the upper and lower portions, and a bore extending through the pipette tip from the upper portion to the lower portion; the lower portion of each pipette tip being adapted for aspirating and dispensing fluids into and out of at least a portion of the bore; the upper portion of each pipette tip being substantially frustum-shaped and sized to partially penetrate and sealingly engage the mouth of one of the cylinders to form a circular seal; the raised central portion of each pipette tip being positioned against the upper surface of the box such that the lower portion of the pipette tip is contained within the box and such that urging the box toward the assembly with the pipette tips aligned with the cylinders would result in simultaneously loading the plurality of pipette tips into the respective cylinders.