| 摘要 |
PURPOSE:To make possible exact analysis with high reliability and to lessen manpower by automation by sampling a specified amt. of liquid to be examined at every specified time, introducing the sample liquid together with a specified amt. of coloring agent and other buffer chemicals, etc. into a colorimetric device and analyzing automatically the samples. CONSTITUTION:The colorimetric device forms the liquid circulation route from a mixing vessel 9 through a filter 21, a gas-liquid separating vessel 22 and a colorimetric vessel 23 to the vessel 9. A microcomputer 30 controls the device so as to sample the specified amt. of the liquid to be examined at every specified time and to introduce the sampled liquid together with the specified amt. of the coloring agent and the other buffer chemicals, etc. into the colorimetric device. The sampled liquid is circulated for the specified time in the colorimetric device and is thereby stabilized. The liquid is then decolored and is automatically analyzed by a colorimeter 26. The liquid is discharged upon ending of the analysis and after the colorimetric device is cleaned for the specified time, the specified amt. of the liquid to be measured is again sampled and the measurement is repeated. The colorimetrically measured value is digitized and displayed during this time. |
