Chemical reaction velocity measuring apparatus
US4035087A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1975 |
| Grant date | Jul 12, 1977 |
| Priority date | — |
| Expiry date | Dec 16, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/272
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for measuring a chemical reaction velocity of a sample whose light absorbance changes in proportion to time, comprises a differential circuit for converting the absorbance signals at two different times into respective first-order differential signals, or an integrating circuit for integrating the variation of absorbance signal at two times into two integrated signals. A subtractor is provided to obtain the difference of the two differential signals or two integrated signals. The output of the subtractor is compared with a standard level by a comparing means so that abnormality signal is indicated when said difference does not fall into the standard level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.