Patent ID: 8293192
Filing Date: 2012-10-23
Classification: B01L

Abstract:
1. A dispensing nozzle tip for dispensing a liquid sample or a liquid reagent by means of a dispensing apparatus, the dispensing nozzle tip comprising: an upper end portion having an opening into which the dispensing apparatus is inserted; a barrel portion connected to the upper end portion, the barrel portion accommodating therein the liquid sample or the liquid reagent; a leading end portion connected to the barrel portion, the leading end portion having an opening through which the liquid sample or the liquid reagent is aspirated or discharged; and wherein the upper end portion has an inside diameter smaller than an outside diameter of the barrel portion; wherein an inner surface of the connection portion consists of an upper curved surface and a lower curved surface that are smoothly and continuously directly connected to each other, wherein the upper curved surface extends in an outwardly curved surface relative to the nozzle tip from the barrel portion to an inner side of the dispensing nozzle tip; wherein the lower curved surface extends in an inwardly curved surface relative to the nozzle tip from the upper curved surface to the leading end portion and is smoothly and continuously connected with the leading end portion; and wherein an angle formed between a line tangent to a boundary portion between the upper curved surface and the lower curved surface of the leading end portion and a center axial axis of the dispensing nozzle tip is 45° or less.