Got one of those posted outside your cubicle today Troggie?!? :)
For the uninitiated to US NFPA signage:
Red - Fire hazard Blue - Health hazard Yellow - Reactivity White - Specific
hazard
The numbers in the first three areas range from 0 to 4,
with 0 signifying no hazard and 4 signifying a severe hazard.
For example, in the Reactivity area: 0 = Stable 1 = Unstable
if heated 2 = Violent chemical 3 = Shock or heat may detonate
4 = May detonate
In the Fire hazard area, the
numbers indicate the flash point: 0 = Will not burn 1 = Above
200 degrees F (93 C) 2 = Below 200 degrees F 3 = Below 100
degrees F (38 C) 4 = Below 73 degrees F (23)
Concrete is
an example of a class 0 fire hazard. Paper and wood are class 1.
In the Health hazard area: 0 = No hazard 1 = Slightly
hazardous 2 = Hazardous 3 = Extremely hazardous 4 =
Deadly
In the Specific hazard area, you will see things like:
OXY - Oxidizer ACID ALK - Alkali COR -
Corrosive ...or the universal symbol for female. :)
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