Chromatographic column connecting method of liquid chromatograph and liquid chromatograph

The invention provides a chromatographic column connection method and a liquid chromatograph which can keep a chromatographic column which is mistakenly arranged by an operator as an unused liquid chromatograph. A chromatographic column connection method for a liquid chromatograph comprises: a first step for obtaining a first read result by reading identification information of a chromatographic column after the chromatographic column is installed in a chromatographic column installation unit and before the chromatographic column is connected to an analysis flow path; and a second step of connecting the chromatographic column to the analysis flow path, reading identification information of the chromatographic column to obtain a second read result, and comparing the first read result and the second read result to determine the identity of the chromatographic column. 本发明提供一种能够将操作者误设置的色谱柱保持为未使用的液相色谱仪的色谱柱连接方法以及液相色谱仪。液相色谱仪的色谱柱连接方法构成为，具有：第一步骤，在将色谱柱设置于色谱柱设置部之后且将该色谱柱与分析流路连接之前读取该色谱柱的识别信息，得到第一读取结果；以及第二步骤，在将所述色谱柱与所述分析流路