Toxic substances, Infectious substances

Division 6.1 Toxic (also Poison)
Toxic substances, poisons, and irritating materials (not gasses) that can cause death, injury, or harm if swallowed, inhaled, or by skin contact. Examples: methyl bromide, tear gas, chloroform, arsenics, cyanides, cytotoxic waste, barium compounds, and pesticides.

Division 6.2 Infectious Substances – Biohazards
Infectious substances that can contain pathogens (bacteria, viruses, fungi, or other infectious substances) that can cause disease in humans or animals. Examples: biological products, regulated medical waste, used healthcare products, and forensic materials.

Category A: Infectious substances capable of causing permanent disability or is life-threatening when exposure occurs.
Category B: Any substance that does not meet Category A criteria.