PDF CHEMICAL CONTAINER LABELING AT OSU All chemical containers ... CHEMICAL CONTAINER LABELING AT OSU All chemical containers must be clearly labeled with chemical names and hazard identification. OSU recommends and prefers that the Hazardous Materials Identification System (HMIS) be used in laboratories. Ratings are found on Safety Data Sheets (formerly MSDS). HMIS Rating and Label Information: HMIS HEALTH HAZARD RATING CHART