Quantitative sampling device for volatile liquid

The utility model discloses a volatile liquid quantitative sampling device which comprises a pipetting suction head with two open ends and a hollow connecting suction head with the inner diameter smaller than that of the pipetting suction head, and the connecting suction head can be connected with the pipetting suction head and is used for accommodating volatile liquid sucked by the pipetting suction head. According to the sampling device disclosed by the utility model, the inner diameter of the pipetting suction head is smaller than that of the connecting suction head, so that the evaporation surface of a solution in the sampling device becomes smaller, the volatilization speed of the volatile liquid is greatly reduced, the volume change of the solution caused by volatilization is reduced, and the volatilization process of the volatile liquid is slowed down; and the accuracy when the volatile liquid is moved and taken is ensured. 本实用新型公开了一种易挥发液体定量取样装置，包括有两端为敞口结构的移液吸头和中空且内径小于移液吸头内径的连接吸头，连接吸头可与移液吸头连接而用于容纳移液吸头吸