Purification column

The purification column comprises a sampling pipe and a purification part, the sampling pipe is provided with a liquid storage cavity, the purification part comprises an insertion pipe and an installation part, the insertion pipe is connected with the installation part, a containing cavity is formed in the installation part, the insertion pipe is provided with a flow channel, the containing cavity is communicated with the flow channel, a filter element is installed in the containing cavity, and one end, far away from the insertion pipe, of the installation part is provided with a liquid inlet. When purification operation needs to be carried out, the purification part is directly inserted into the sampling pipe, and the purification part is pushed downwards in the sampling pipe. According to the purification column disclosed by the utility model, a long-section dropper head is not arranged at one end, far away from the insertion tube, of the mounting part, but the liquid inlet is directly formed in the end par