Here is an excerpt from “Control Measures and Safety Programs,” part VI of the OSHA Technical Manual, Section III, Chapter 6:
a. Class IIIA (beam irradiance 2.5 mW/cm2), Class IIIB and Class IV lasers: Require the ANSI DANGER sign format: white back-ground, red laser symbol with black outline and black lettering (see Appendix III:6-4). Note that under ANSI Z 136.1 criteria, area posting is required only for Class IIIB and Class IV lasers.
b. Class II or Class IIIA areas (if area warning is deemed unnecessary by the LSO): All signs (and labels) associated with these lasers (when beam irradiance for Class IIIA does not exceed 2.5 mW/cm2) use the ANSI CAUTION format: yellow background, black symbol and letters.
c. During times of service and other times when a temporary laser-controlled area is established, an ANSI NOTICE sign format is required: white background, red laser symbol with blue field and black lettering. This sign is posted only during the time when service is in progress. Examples of area warning signs and logotype designs are given in Appendix III:6-4.
Control Measures and Safety Programs, part VI
a. Class IIIA (beam irradiance 2.5 mW/cm2), Class IIIB and Class IV lasers: Require the ANSI DANGER sign format: white back-ground, red laser symbol with black outline and black lettering (see Appendix III:6-4). Note that under ANSI Z 136.1 criteria, area posting is required only for Class IIIB and Class IV lasers.
b. Class II or Class IIIA areas (if area warning is deemed unnecessary by the LSO): All signs (and labels) associated with these lasers (when beam irradiance for Class IIIA does not exceed 2.5 mW/cm2) use the ANSI CAUTION format: yellow background, black symbol and letters.
c. During times of service and other times when a temporary laser-controlled area is established, an ANSI NOTICE sign format is required: white background, red laser symbol with blue field and black lettering. This sign is posted only during the time when service is in progress. Examples of area warning signs and logotype designs are given in Appendix III:6-4.
Control Measures and Safety Programs, part VI
Even low-power lasers with only a few milliwatts of output can be hazardous to human eyesight. That’s why Phillips Safety Products offers a range of laser warning signs, alongside laser barriers, filters, windows, and eyewear, to ensure safe and legal operation. These signs provide immediate warnings, adhere to ANSI requirements, are easily understood in any language, and measure 10” high x 14” wide for maximum visibility.
Phillips Safety Products provides the following variations, featuring magnetic backing for quick installation and removable, reusable signage:
