Patent ID: 6190614
Filing Date: 2001-02-20
Classification: G01N

Abstract:
A pretreatment apparatus for distributing a washing solution, comprising:a needle for sampling a liquid sample in a predetermined quantity;a needle holding mechanism for movably holding said needle in a vertical direction;a frame for movably holding said needle holding mechanism in a horizontal direction;a needle washing block provided for said needle holding mechanism, which is moveable in the horizontal direction, said needle washing block including a bore through which said needle extends, and a washing inlet communicating with said bore;a pretreatment tank formed by integrating a diluting tank for diluting the predetermined quantity of liquid sample from said needle, and a liquid discharge tank for discharging waste liquid;a mixing fluid passage, for mixing the diluted liquid sample, extending from said diluting tank; andpipes and two syringes defining flow passages connecting said needle, said washing inlet of said needle washing block, said pretreatment tank, and said mixing fluid passage.