By using the method and equipment according to this invention it is possible to analyze rapidly a large number of microbiological culture samples, or alternatively of liquid phase samples, based on the gases or gaseous compounds released by them. This invention exploits generally a sample line, along which the samples move, and it can be used for the microbial control tasks in hospitals, industry, hygiene and environmental fields. In this system gas is led into the culture vessels during the growth of the microbe, and gases released by the culture or liquids derived from them are collected into the chambers, capsules or equivalents.