Page 142 - School Infection Control Handbook - 2010

Appendix B: Selection of Products, Dispensing Equipment, and Application Systems
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Interpretation of colored symbols – White Box - NFPA
The NFPA system uses the white box to alert the user to special hazards.
Special Hazards – NFPA rating only
OX Contains an oxidizer, which can greatly increase the rate of fire
Reacts to water and poses a hazard when using water to fight a fire
ACID Contains acid, a corrosive with a pH of 2 or less
ALK Contains alkali, a corrosive with a pH of 12.5 or above
COR Corrosive; damages living tissue (a material is corrosive when it is
at either end of the pH scale)
Interpretation of colored symbols – White Box - HMIS
The HMIS white box corresponds to the type of personal protective equipment (PPE) required,
and uses a letter system to denote the appropriate PPE (see diagram below).
Health
Flammability
Reactivity
PPE
Letter Required Equipment Letter Required Equipment
A B
C D
E F
G H
I J
K
OX