Patent ID: 7219566
Filing Date: 2007-05-22
Classification: G01N

Abstract:
1. An automatic sampler comprising: a container for storing a liquid sample; a needle having a tapered portion with a tip end for suctioning and ejecting the liquid sample, and a retention channel for holding said liquid sample suctioned from said container via said tip end, wherein an outer diameter of said tip end of said needle is at least 0.1 mm and at most 0.6 mm; a mechanism for moving said needle in a horizontal and a vertical direction; an injection port for receiving said held liquid sample, wherein said injection port has an insertion hole for insertably receiving said tip end of said needle and said liquid sample ejected therefrom, said insertion hole having a reduced contact area with an outer surface of the tip end of the needle; and an analysis channel connected to the injection port for receiving and analyzing said liquid sample, wherein said moving mechanism is arranged such that an insertion pressure applied when said tip end of said needle is inserted into said injection port is 3 kg or less.