Bacterial growth usually inhibited by an antibiotic. Growth of other organisms on the plate often prevents the identification of Stachybotrys sp. Slower growth allows for easier identification of Stachybotrys sp. Inhibits the growth of all but the acid tolerant bacteria. Especially good on damp cellulose materials.
Slower growth allows for identification of a wider number of fungi.
A chemical - dichloran is used to prevent overgrowth from certain fungi. The media does not provide enough moisture to promote the growth of Stachybotrys sp. Use on materials that were wet previously but are now dry for more than 1 week. This media promotes the growth of most Aspergillus ssp. Dip sterile swab in sterile water if the surface is dry.