Automatic sampler

Details Automatic sampler Automatic sampler

2007-05-22

2007-05-22

Williams, Hezron (Department: 2856)

Measuring and testing

Sampler, sample handling, etc.

Capture device

C073S864010

Reexamination Certificate

active

11260635

ABSTRACT:
An automatic sampler for automatically sampling liquid samples to be introduced into apparatuses that analyze liquid samples, such as liquid chromatographs, includes a needle with a tapered tip end for suctioning and ejecting liquid, a mechanism for moving the needle in the horizontal and vertical directions, and an injection port having an insertion hole into which the tip end of the needle can be inserted. The outer diameter of the tip end of the needle is at least 0.1 mm and at most 0.6 mm. By reducing the needle-to-port contact area, the automatic sampler facilitates high-sensitivity and high-precision analyses by significantly reducing the amount of cross-contamination, regardless of the type of samples.

REFERENCES:
patent: 4944781 (1990-07-01), Ruggirello et al.
patent: 5770272 (1998-06-01), Biemann et al.
patent: 2002/0102185 (2002-08-01), Tatsumi

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