Method of forming a needle for auto-sampler
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United States of America Patent
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Mar 4, 2008
Grant Date -
Jun 14, 2007
app pub date -
Jan 3, 2007
filing date -
Mar 30, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
In a method of forming a needle for an auto-sampler successively collecting liquid samples from plural sample containers, a parent material forming the needle is coated with a coating material having a chemical activity small than that of the needle. Then, the coated parent material is polished so that the surface has an average roughness of 10 to 20 nm.
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