Simple desalinating tubular column

The utility model discloses a simple desalinating tubular column. The simple desalinating tubular column comprises a tubular column cylinder, a sealing piston, a filter element and a liquid inlet pipe, wherein the upper end of the tubular column cylinder is open, the lower part of the tubular column cylinder is gradually contracted and the bottom of the tubular column cylinder is also open; the sealing piston is mounted on the top end inside the tubular column cylinder; the filter element is mounted on the lower end inside the tubular column cylinder; the liquid inlet pipe penetrates through the sealing piston; the tubular column cylinder is a syringe cylinder with a tip, the tip sleeves the lower end of the syringe cylinder, and the filter element is mounted in the tip; or the tubular column cylinder is a tip and the filter element is mounted in the tip. The simple desalinating tubular column is assembled by use of common laboratory consumables, and is low in cost and convenient to assemble; the corresponding tubular column structures can be selected according to the quantity of samples to be desalinated; besides, the desalinating tubular columns are disposable so that the cross pollution of the samples to be desalinated can be avoided. Meanwhile, the sealing piston of the simple desalinating tubular column is made of rubber so that the airtightness of the desalinating tubular column can be guaranteed.