发明名称 |
Apparatus for inhibiting contamination of sample during bailer emptying |
摘要 |
A bailer collects a column of liquid fluid of predetermined height from a body of liquid fluid at a predetermined depth. The bailer is emptied without contaminating the collected liquid fluid with oxygen. The bailer has two check valves spaced apart from one another by a preselected distance so that it can collect liquid fluid at a predetermined depth below the surface of the body of liquid fluid. A vent opening is formed between the first check valve and the second check valve to enable the bailer to be emptied in the substantial absence of oxygen contamination.
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申请公布号 |
US6669255(B2) |
申请公布日期 |
2003.12.30 |
申请号 |
US20020683904 |
申请日期 |
2002.02.28 |
申请人 |
PRATT DAVID W. |
发明人 |
PRATT DAVID W. |
分类号 |
G01N1/12;G01N1/20;(IPC1-7):F16K15/06;F16K15/04 |
主分类号 |
G01N1/12 |
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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