Air Sampling .

Air sampling uses calibrated pumps to pull a measured volume of air through a spore-trap cassette. The cassette captures airborne spores, fragments and debris for accredited laboratory analysis.

Arnold Mold Inspections performs air sampling using calibrated pumps drawing 15 liters per minute through 5-minute spore-trap cassettes — a standardized industry protocol. Each indoor location is paired with an outdoor reference sample collected the same day, so laboratory results can be interpreted in the context of background outdoor conditions in Los Angeles.

Spore-trap cassettes are sent under chain-of-custody to an accredited environmental laboratory for direct microscopic examination. The lab reports total spore counts per cubic meter and identifies common indicators including Stachybotrys, Chaetomium, Aspergillus, Penicillium, Cladosporium, Alternaria and Basidiospores.

Our reports include a side-by-side indoor/outdoor comparison, a plain-language interpretation of what the counts and species mean, and a recommendation on whether the data supports the need for remediation, additional sampling, or a clean result. Because we do not perform remediation, the recommendation is always in the property owner's interest.