发明名称 |
METHOD AND APPARATUS FOR MEASURING PH |
摘要 |
A method and apparatus for measuring a chemical characteristic of a liquid such as its hydrogen ion activity or pH value. A disposable cassette having a reference and indicating electrode therein utilizes the same solution to first calibrate the device and then as an electrolytic bridge from the liquid sample to the reference electrode. The solution has the properties of a buffered pH and also provides a stable electrochemical environment around the reference electrode. In one embodiment, a volume of a liquid sample is placed into a capillary tube and the open end of the tube is then placed over the indicating electrode immersed in the solution. The electrical potential between the indicating electrode and the spaced reference electrode in the electrolyte solution provides a measurement of the pH value of the liquid when compared to the calibration potential previously measured without the liquid sample contacting the indicating electrode. |
申请公布号 |
IE52192(B1) |
申请公布日期 |
1987.08.05 |
申请号 |
IE19790002310 |
申请日期 |
1979.12.03 |
申请人 |
TRANSIDYNE GENERAL CORPORATION |
发明人 |
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分类号 |
G01N27/28;G01N27/403;G01N27/416;(IPC1-7):G01N27/56 |
主分类号 |
G01N27/28 |
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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