| Level | Code | Display | Definition | 
 | 1 | AGG  | aggressive | 
                        A danger that can be associated with certain living subjects, including humans. 
                      | 
 | 1 | BIO  | Biological | 
                        The dangers associated with normal biological materials. I.e. potential risk of unknown infections.  Routine biological materials from living subjects. 
                      | 
 | 1 | COR  | Corrosive | 
                        Material is corrosive and may cause severe injury to skin, mucous membranes and eyes. Avoid any unprotected contact. 
                      | 
 | 1 | ESC  | Escape Risk | 
                        The entity is at risk for escaping from containment or control. 
                      | 
 | 1 | IFL  | inflammable | 
                        Material is highly inflammable and in certain mixtures (with air) may lead to explosions.  Keep away from fire, sparks and excessive heat. 
                      | 
 | 2 |   EXP  | explosive | 
                        Material is an explosive mixture.  Keep away from fire, sparks, and heat. 
                      | 
 | 1 | INF  | infectious | 
                        Material known to be infectious with human pathogenic microorganisms.  Those who handle this material must take precautions for their protection. 
                      | 
 | 2 |   BHZ  | biohazard | 
                        Material contains microorganisms that is an environmental hazard.  Must be handled with special care. 
                      | 
 | 1 | INJ  | injury hazard | 
                        Material is solid and sharp (e.g., cannulas).  Dispose in hard container. 
                      | 
 | 1 | POI  | poison | 
                        Material is poisonous to humans and/or animals.  Special care must be taken to avoid incorporation, even of small amounts. 
                      | 
 | 1 | RAD  | radioactive | 
                        Material is a source for ionizing radiation and must be handled with special care to avoid injury of those who handle it and to avoid environmental hazards. 
                      |