本试验用于测定纸张和纸板对真菌（霉菌）生长的抵抗力。将薄片与真菌物种接触，然后对其进行监测，以确定薄片是否能在21天内抑制真菌物种的生长。

This test is used to determine the resistance of paper and paperboard to fungal (mold) growth. The sheet is brought into contact with fungal species and then monitored to determine if the sheet can inhibit the growth of the species for a period of 21 days.