发明名称 |
METHOD AND APPARATUS TO CONTROL SAMPLE CARRYOVER IN ANALYTICAL INSTRUMENTS |
摘要 |
A method and apparatus are disclosed which enable the reduction of sample carryover in the measurement cell of an analytical instrument. A sample cell is defined as a region sealed within a first o-ring. Located outside of said sample region is another o-ring which seals and defines a seal wash region as the region between the first and second o-ring. After the fluid sample is injected into the measurement cell a pressure is applied to the seal wash region, forcing the first o-ring to the innermost extent of the groove in which it sits, expelling any trapped solvent and removing from the measurement cell a significant dead volume while the cell is flushed and prepared for a new sample and corresponding measurement. |
申请公布号 |
EP3017291(A4) |
申请公布日期 |
2017.01.25 |
申请号 |
EP20140820680 |
申请日期 |
2014.07.02 |
申请人 |
Wyatt Technology Corporation |
发明人 |
TRAINOFF, Steven P. |
分类号 |
G01N21/15;B08B9/032;G01N21/03;G01N21/11;G01N27/447 |
主分类号 |
G01N21/15 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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