| 摘要 |
PURPOSE:To take a high-precision analysis with reproducibility invariably where disturbance characteristics are remarkable storing the electric system part and optical system part of a detection meter for measurement in a thermostatic casing and preventing the influence of temperature variation. CONSTITUTION:An ultraviolet spectrophotometer equipped with an optical and an electric system is installed on a shelf 16a in the thermostatic casing 16 as part of a liquid chromatography device 13 together with a pump control part 14 and a sample injection part 15. Then, the thermostatic casing 16 is provided with a water storage tank 23 which has a cooler 20 and a heater 22, and a temperature controller 27 and a recorder 28. When a temperature controller 27 is set to specific temperature, respective optical parts and electronic parts of the spectrophotometer 12, pump controller 14, and sample injection part 15 are controlled to the specific temperature and held constant. Consequently, data with invariably high sensitivity are obtained even where disturbance characteristics of a production line, etc., are remarkable without any influence of variation in room temperature, etc. |
