Method to determine air change rates using krypton-85 and its application to tests in stables. Die Technik der Luftwechselbestimmung mit radioaktiv Krypton-85 und ihre Anwendung auf Untersuchungen in Stallen.

Discusses the principles involved in measuring air change rates using tracers and gives the theory. Outlines the preparation of the tracer and the test procedure in stables. Finds that satisfactory results can be obtained when the concentration of krypton-85 is only one tenth of the maximum allowable. Lists the advantages of the method.