Final answer:
A 100 PPM sanitizing solution is primarily used for sanitizing food contact surfaces, which is necessary to maintain safe levels of microbial contaminants in food service areas.
Step-by-step explanation:
A 100 PPM (parts per million) sanitizing solution is typically used for sanitizing food contact surfaces. Sanitization is the process of reducing the number of microbial contaminants to levels considered safe for public health. For instance, in the food service industry, dishes and utensils are sanitized to prevent the spread of microbes. This is done using very hot water or chemical agents. Surfaces such as countertops in food service areas need to be routinely sanitized to prevent cross-contamination.
Disinfectants and antiseptics are used to control microbial growth on fomites and living tissues, respectively. These compounds vary in their composition and effectiveness based on the application they are intended for. Disinfectants, such as chlorine bleach, are often used on nonliving surfaces, whereas antiseptics can be applied to living tissue.