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