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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
With the sticky side toward the area to be sampled, press down firmly on the area. Do not press down too lightly or you may just get spores and not the spore bearing structures necessary for identification. Do not press down too hard either, you may come away with the paper or paint surface.
After you have taken the sample, fold the sticky side of the tape together and place it in a Ziploc bag.
Remember to label your bag and be sure to include a chain of custody with the samples when sending them to the laboratory
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.
Bulk material can be placed into a normal Ziploc bag. Be sure to label each bulk sample so that both you and the laboratory can easily identify it.
Be sure to include a chain of custody with the samples when sending them to the laboratory.
If using a knife or razor blade to cut the substrate, be sure to decontaminate it before any further use to prevent cross contamination of samples.