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Tape samples are taken by using transparent tape (do not use “invisible” or “satin” tape) and placing it over the surface on which the mold is growing. You will need about a two to three inch piece of tape
Bulk samples are taken by extracting portions of the substrate to which the fungi are attached. For instance, if the mold is growing on drywall, either the paper layer of the drywall or an entire piece of drywall is removed and sent to the laboratory for analysis.