What is the effective strength of a disinfectant?

The effective strength of a disinfectant refers to the concentration at which it can effectively eliminate microorganisms. In this context, the option indicating 1 to 1000 PPM (parts per million) represents a commonly accepted range for certain disinfectants to ensure their efficacy in various settings, including those relevant to esthetics and skin care. This concentration level is sufficient to ensure that harmful bacteria and other pathogens are effectively neutralized.

Lower concentrations, such as those you might find in the other options, may not provide the same level of disinfectant power and could lead to insufficient disinfecting, which is critical in maintaining safe and hygienic environments in esthetic practices. Thus, recognizing 1 to 1000 PPM as the effective strength allows professionals to ensure that they are utilizing their disinfectants properly and effectively in their services.