Sentences with phrase «by microbial contaminants»

The IAQ may be compromised by microbial contaminants (mold, bacteria), chemicals (such as carbon monoxide, radon), allergens, or any mass or energy stressor that can induce health effects.
The researchers conclude that chemical changes to two of the beers were likely caused by microbial contaminants while the third beer, which was better preserved, offered the best insights into the older brews» natural aging processes.
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