PURPOSE: To prevent the diffusion of a cleaning liquid to an analyzing sample and the spread of the analyzing sample by sucking a gaseous phase and a small amt. of the sample of the same kind as liquid sample and further sucking the gaseous phase then sucking a prescribed amt. of the liquid sample.
CONSTITUTION: The cleaning liquid 1 in a piping is fed and the specified amt. of air 2a is sucked after the analysis of the previous liquid sample. The sample 3 which is of the same kind as the liquid sample to be used for the analysis is then sucked at the min. amt. required to remove the liquid 1 and to prevent the dilution of the liquid sample to be sucked for the purpose of the analysis and further the specified amt. of the air 2b is sucked. The sample 3 of the min. amt. required for the analysis is sucked and further the air 2c is sucked. The mixing of the liquid 1 and the sample 3 is thus prevented by the air 2a and further the mixing of the sample 3 mixed with the liquid 1 and the sample 4 for analysis is prevented by the air 2a. The dilution of the sample 4 for analysis is prevented as well. Since the sample 4 is sealed by the air 2b and c, the spread thereof is suppressed.
MORIYA TAKASHI
OKUI MITSUNORI
| JPS5623103A | 1981-03-04 |
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