What Are the Different Types of Hygiene Standards?

Hygienic standard refers to the hygienic allowable limit value of chemical, physical and biological harmful factors in production and living environment according to health requirements, that is, the maximum allowable concentration. It is based on the dose-response relationship between harmful substances in the environment and the body, taking into account the sensitive population and the time of exposure, a "relatively safe concentration" that does not have a direct or indirect harmful effect on human health.