CAPILLARY COLUMN MANUFACTURING METHOD Russian patent published in 2021 - IPC G01N30/56 

FIELD: analytical chemistry.

SUBSTANCE: invention relates to analytical chemistry and can be used in gas chromatography. The method of manufacturing capillary columns includes vinylizing the capillary column, applying a layer of a stationary phase to the inner surface of the capillary column, while the vinylization includes an additional stage - drying in an oven, the method includes additional application of paste before applying a fixed layer, and vinylization, application of glue and stationary phase using an adapter, which is a medical syringe without a needle, two detachable heat-shrinkable tubes 15-20 mm long, one end of the tube is compressed and fits tightly onto the syringe, the second tube with one end is adjusted to the first tube with a syringe, the other end on a capillary column with a diameter of 0.530 mm, both tubes are heat shrinkable under the action of heating.

EFFECT: technical result is the creation of a method for manufacturing capillary columns with an even and uniform coating of the inner wall of the capillary, with a convenient application of a stationary phase to the inner surface.

5 cl, 3 dwg