Laboratories that use OSHA regulated substances (Appendix D) are to be posted "OSHA Regulated Substance."
Laboratories that use hazardous chemicals have a posting on the laboratory side of the exit doors that contains the phone numbers to call if an emergency occurs.
Signs for emergency response equipment such as safety showers, eye wash, First Aid Kits, and fire extinguishers will be clearly visible and unobstructed.
Noise notification signs need to be posted where the noise level equals or exceeds 85 dB for 8 hours, time weighted average.