mold air sampling 2

https://moldtestingstlouisinsight.novacrestiq.com/posts/mold-testing-st.-louis-when-to-test-and-what-the-results-really-mean

Mold air sampling is that process where you use a special device to pull a known volume of air through a sticky strip or a petri dish of growth medium, then send it to a lab to identify and count the mold spores floating around. It helps figure out if your indoor air has a hidden mold problem you can't see, often done when musty smells won't go away or after water damage.