| A | B |
|---|
 | Safety of live animals and students must be ensured |
 | Organisms or organic materials can harm humans |
 | Substances could stain or burn clothing |
 | Substances can react with and destroy tissue and other materials |
 | Danger from electrical shock or burn |
 | Materials may ignite if exposed to an open flame or spark |
 | Danger to olfactory tract from fumes |
 | A danger to the eyes exists |
 | Substances can irritate the skin or mucus membranes |
 | Special disposal considerations required |
 | Use of tools or glassware can easily puncture or slice skin |
 | Objects can burn skin by being too cold or too hot |
 | Poisonous substance that can be acquired through skin absorption, inhalation, or ingestion |
