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RTK Signs (NFPA Diamond - NFPA 704)
Making RTK Signs and Tags
These pages provide information about safety and hazard warning signs, labels and tags. Select the type of hazard sign you'd like to learn about:
| Warning | Danger | Biohazard | Caution | Notice |
| Safety | RTK | Laboratory | LOTO | Emergency |
There are many types of Right-To-Know sign and label designs used to inform employees of chemical hazards. The most popular RTK signs and labels use a number rating and color coding system in conjunction with written text to identify the chemical and its physical and health hazards.
The National Fire Protection Association's (NFPA) Standard System for the Identification of the Fire Hazards of Materials is an example of a number and color coding system. The NFPA Diamond (defined in the NFPA 704 code) uses color codes to identify Health risks (in blue), Flammability (in red), Instability (in yellow), and Special Hazards (in white). Numbers are used to rate the severity of the hazard on a scale of 0 to 4. 4 represents the most severe. 0 represents minimal or no danger.
In addition to the NPFA diamond, RTK labels and signs may include pictograms showing required PPE, as well as text providing information about the chemical, the hazards it presents, and how to protect against those hazards.
NFPA Diamond RTK signs and labels can be made in a variety of sizes. For example, the DuraLabel 7000 (shown to the right) prints on die-cut NFPA Diamond labels that are up to 8" x 12" in size. This larger size is excellent when the RTK information needs to be clearly seen from a distance.
The format used for RTK signs is the same as used for labels. Consistency in style throughout a facility makes it easier for employees, visitors, contractors and vendors to quickly understand the information being presented.
Below are some useful links:
| OSHA | ANSI | NFPA |
In Canada the Workplace Hazardous Material Information System is know as WHMIS.
Labels are required by WHMIS laws.
WHMIS labels must have a hatched border and include the following information:
- Product Name
- Supplier Name
- Risk phrases describing the hazards
- Instructions for safe handling
- First aid procedures
- A statement indicating that a MSDS is available
- WHMIS hazard symbols
- The text must be in English and French
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PO Box 4030
Beaverton, OR
97076-4030
phone: 888.326.9244
fax: 503.646.0183
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