Mandates clear labeling of laboratory entrances and chemical containers.
Contains the highest quantities of flammable liquids. NFPA 45-2015: Fire Safety in Research Laboratories
Imposes strict limits on maximum quantities of flammable liquids based on class. Mandates clear labeling of laboratory entrances and chemical
Requires non-recirculated air and specific face velocities for fume hoods. NFPA 45-2015: Fire Safety in Research Laboratories
Laboratories are classified by the quantity of flammable and combustible liquids present: