In this text I focus attention on the concept of laboratory science created by Ian Hacking, According to Hacking’s theory, not all scientific experiments are laboratory experiments. Laboratory science created phenomena that seldom or never occur in a pure state in nature. In the second part of the text I analyze Hacking’s division of elements of laboratory science. There are three groups of elements: intellectual components, material things and results of experiment, in short: ideas, things and marks. The elements of laboratory in Hacking’s theory are used directly in the course of the experiment. Laboratory sciences are stable. Each element can be modified in order to match to each other. The stability of laboratory science is result of fact that theory and the laboratory equipment evolve in that way, that they match each other and mutually self-vindicating.