[Methods of determination of total concentration of bacteria in atmospheric and indoor air].

Methods of evaluation of microbiological air pollution are not standardized in Poland. As a result of this status miscellaneous media and various methods of sedimentation of microorganisms on/or these media are applied in the studies. In practice it makes difficult (or even impossible) comparison of results published studies and expert's reports. To illustrate the range of the problem in the presented paper are shown results of measurements of total number of bacteria performed paralelly with: sedimentation and respiratory methods, three various media and clear different number of colony bacteria on Petri-dishes. Practical instructions concerned selection of measurements methods and interpretation of results are presented.