The microbiological testing indicators of the drug desiccant include: yeast, total number of bacteria, mold, and Escherichia coli.

CFU: Colony-Forming Units (CFU, Colony-Forming Units) refers to the total number of bacterial communities per unit volume. In the culture and counting of live bacteria, the colony formed by the growth and reproduction of a single bacteria or multiple bacteria in a cluster on a solid medium is called a colony forming unit, which expresses the number of live bacteria. The measurement method of colony forming unit is different from the general counting method. Generally, the calculation of the number of bacteria directly under the microscope will count all the living and dead bacteria, but the CFU only counts the live bacteria