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Method for checking the total number of colonies in indoor air
Bacteria are the most common microorganisms in nature, and there are so many kinds of them that they are almost everywhere in the environment where humans live. Since ancient times, various bacterial infectious diseases have continued to ravage human beings. Events such as SARS, mad cow disease, and bird flu have made people have higher demands on our living environment. Thousands of bacteria can be in the air in the main places of human activities.
There are many types of bacteria in the air. In addition to the bacteria of the genus Bacillus, Achromobacter, and Sarcina, there are also some pathogenic microorganisms from the human body, such as Mycobacterium tuberculosis, diphtheria, hemolytic streptococcus, gold Staphylococcus aureus, meningococcus, etc.
At present, the inspection of microbial pollution in the air has attracted the attention of many industries, generally taking bacteria and fungi as the detection targets. There are many detection methods for bacteria in the air, mainly including sedimentation method, impact method, filtration method, and simple quantitative determination method.