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Journal of Environmental and Public Health
/
2023
/
Article
/
Tab 4
/
Research Article
Microbiological Indoor and Outdoor Air Quality in Chicken Fattening Houses
Table 4
Polish Norms PN-89/Z-04111/02 and PN-89/Z-04111/03 (
https://www.pkn.pl/
) [
23
].
Polish Norm
Mesophilic bacteria
Staphylococci
Fungi
No pollution
<1000
0
3000–5000
Medium pollution
1000–3000
<25
5000–10000
Heavy pollution
>3000
>25
>10000