Welcome to the essential e-learning course on the Control of Substances Hazardous to Health (COSHH). In this course, we will explore the vital aspects of managing hazardous substances in the workplace to ensure the health and safety of employees. We will cover the definition and classification of hazardous substances, interpret hazard warning pictograms, and understand product labels and safety data sheets. Furthermore, we will discuss the various exposure routes of hazardous substances and the implementation of control measures, including local exhaust ventilation (LEV) and personal protective equipment (PPE).