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The left quadrant rating health hazard.
Also known as: Blue quadrant fire diamond, Health hazard rating
The left quadrant of the NFPA diamond, carrying a figure from zero to four rating the health hazard of the material.
Rates the health hazard of a material from zero to four on the NFPA diamond.
Contexts: Public information
Rates short-term exposure during a fire rather than long-term toxicity, so a low figure is not a statement that a material is safe to work with. The quadrant records describe the notation and are not emergency response guidance.
Contexts: Public information
The left of four small diamonds, filled with a distinguishing colour and carrying a single digit.