A. The design of the circular column box:The temperature parameter and the temperature control precision are very important in gas chromatography technique. The choice of temperature parameter and temperature control precision, especially the temperature control precision of chromatographic column (column box), the consistency of column box valid space temperature field and the repetition of temperature programming all can affect the sensitivity, the stability, the separation of chromatographic peak and the precision of qualitative and quantitative analysis.B. The design of chromatographic analysis unit modularization:Many units and departments, such as the analysis testing center in college, production quality intendance testing center of the technical director bureau, hygiene epidemic prevention station, environment monitor station, physics and chemistry examination room of public security system, food agrochemical giblets testing, testing stations in all trades, analysis center, sci
A01- Gas Chromatography