The approval of PPE is governed by stringent regulations outlined in the Occupational Safety and Health Act 1994 and its associated regulations, including the Occupational Safety and Health (Use and Standard of Exposure to Hazardous Chemicals) Regulations 2000 and the Occupational Safety and Health (Noise Exposure) Regulations 2019. These regulations set the benchmark for safety, ensuring that PPE meets the highest standards to protect workers from chemical and noise hazards.