Why Perform Airborne Mold/Particle Sampling?
Given these limitations, why do we use air sampling at all? As a screening mechanism: if we find significant levels of airborne particles which have not already been found by a visual inspection it may mean that additional, more thorough or invasive building inspection is warranted. But keep in mind that the absence of airborne particles in a screening check is no guarantee that problematic mold is absent in the building. As a cross-check, in clearance testing, in checking HVAC duct systems for contamination, or in examining deliberately-disturbed dust in an area are examples where this technique has application. A positive air sample result is a useful, but incomplete cross-check on the visual inspection and bulk sampling. For example If we find high levels of problematic particles in an air sample but do not find them in visual inspection nor in bulk samples, additional, more invasive building investigation would be appropriate. But we would not recommend relying on this method as th