In this episode Ted Madison, 3M’s former Technical Services Specialist for the Personal Safety Division in the U.S.A. joins us to discuss Hearing Protection Device Ratings. When hearing protection is worn, it is important that the protective devices used have the appropriate protection rating based on your level of exposure to prevent noise-induced hearing loss. However, with different test methods used around the world to determine rating systems, ear plugs or ear muffs can have multiple ratings on them. How do you make sense of it all?