EN 172

According to EU Regulation 2016/425, by Personal Protective Equipment (PPE) we mean any device or item intended to be worn or held by a person for protection against one or more risks to that person's health or safety, as well as any functional complement forming part of that item, even if removable. The personal protective equipment (PPE) is divided into three categories:
Cat I: PPE of simple design intended to safeguard the person against risks of minor physical harm, the effects of which can be identified in good time and without harm to the user.
Cat. II: PPE that does not belong to the other two categories.
Cat. III: PPE of complex design intended to safeguard against risks of death or severe and irreversible injuries.

Standard EN 172 describes the requirements and physical properties of the filters for the damping of sunlight in industrial use. The mechanical and optical characteristics of the above mentioned filters are also indicated among these properties. Depending on the field of use, the solar filter can be used as an integrated filter in the glasses or as a single filter. For their industrial use, sun filters must also comply with the general requirements for personal eye protection indicated in standard EN 166.