Environmental Safety What are class 4 indicators? March 7, 2026 by Myaya | Leave a Comment Class 4 indicators are a specific type of hazardous waste that can pose a significant threat to human health and the environment if not managed properly. These indicators are defined by their ignitability, corrosivity, reactivity, or toxicity, making them distinct from other waste classifications. Understanding the characteristics and proper handling of class 4 indicators is […] Read more ยป