NFPA 704 Printed Sign Generator :
Design Your Own NFPA 704 Hazmat Diamond Sign or Label

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Set your Hazard Levels

Health Hazard Level
Flammability Hazard Level
Instability Hazard Level
Special Hazard
Rating Explanation Guide
HEALTH HAZARD FLAMMABILITY HAZARD INSTABILITY HAZARD
4 = Can be lethal 4 = Below 73 Degrees F 4 = May explode at normal temperatures and pressures
3 = Can cause serious or permanent injury 3 = Above 73 Degrees 3 = May explode at high temperature or shock
2 = Can cause temporary incapacitation or residual injury 2 = Above 100 Degrees F, 2 = Violent chemical change at high temperatures or pressures
1 = Can cause significant irritation 1 = Above 200 Degrees F 1 = Normally stable.  High temperatures make unstable
0 = No hazard 0 = Will not burn 0 = Stable

This chart is for reference use only.  To determine specifications, you can purchase a copy of the NFPA 704 standard here..

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