Catstrong Mold Removal 2709 S Lamar Blvd Suite 106B Austin, TX 78704 Understanding Mold - Bulk and dust sampling Bulk removal of material from the contaminated area is used to identify and quantify the mold in the sample. This method is often used to verify contamination and identify the source of contamination. Dust samples can be collected using a vacuum with a collection filter attached. Dust from surfaces such as floors, beds, or furniture is often collected to assess health effects from exposure in epidemiology studies. Researchers of indoor mold also use a long-term settled dust collection system where a dust cloth or a petri dish is left out in the environment for a set period of time, sometimes weeks. https://en.wikipedia.org/wiki/Indoor_mold https://local.google.com/place?id=2623984943680975954&use=srp&hl=en https://maps.google.com/maps?cid=2623984943680975954 https://moldremovalaustin.org/services/mold-removal/