Unit for collecting gas from sample in sample container

PURPOSE: To obtain a unit for transferring a gas sample from a sample container to an analyzer or the like, without injecting a carrier gas into the sample container. CONSTITUTION: At first, a sample container 50 is elevated, such that the barrier wall 54 of the container penetrates a probe 110 in an outer head space 102, and then a sample gas is transferred from a head space 52 in the container to the outer head space through a shuttle valve 130. Subsequently, a carrier gas is fed from a carrier gas supply 200 through a switching valve 104 to the outer head space, in order to transfer the sample gas therefrom to an analyzer 210.