1. Class 3b Special Precautions examples (insert below at position 1 on sign): 1. Laser protective eyewear required 2. Invisible laser radiation 3. Knock before entering 4. Door to be locked during laser use 5. Do not enter when light is on 6. Restricted access area 7. Eye and skin PPE required Laser type/power/wave/duration examples (insert appropriate text at position 2 on sign): 1. Types: Argon, Helium-Neon(HeNe), Krypton, Excimer (ArF, KrF), Ruby, Sapphire, Neodymium(Nd):YAG, CO2 2. Power: max. output in Joules or Watts 3. Wavelength(s) in µm (0.180 -10 3 µm) 4. Duration: Continuous Wave (CW), pulsed, Q-switched Laser type/power/wave/duration : ______________ _______________ ____________________ Class 3b laser Special precautions: __________________ _____________________________ _____________________________ DANGER (Position 1) (Position 2) NMSU EHS/dls06

2. Class 4 Special Precautions examples (insert below at position 1 on sign): 1. Laser protective eyewear required 2. Invisible laser radiation 3. Knock before entering 4. Door to be locked during laser use 5. Do not enter when light is on 6. Restricted access area 7. Eye and skin PPE required Laser type/power/wave/duration examples (insert appropriate text at position 2 on sign): 1. Types: Argon, Helium-Neon(HeNe), Krypton, Excimer (ArF, KrF), Ruby, Sapphire, Neodymium(Nd):YAG, CO2 2. Power: max. output in Joules or Watts 3. Wavelength(s) in µm (0.180 -10 3 µm) 4. Duration: Continuous Wave (CW), pulsed, Q-switched Laser type/power/wave/duration : ______________ _______________ ____________________ Class 4 laser Special precautions: __________________ _____________________________ _____________________________ DANGER (Position 1) (Position 2) NMSU EHS/dls05

3. Special Precautions examples (insert at position 1 on sign): 1. Laser protective eyewear required 2. Invisible laser radiation 3. Knock before entering 4. Door to be locked during laser use 5. Do not enter when light is on 6. Restricted access area 7. Eye and skin PPE required Laser type/power/wave/duration examples (insert appropriate text at position 2 on sign): 1. Types: Argon, Helium-Neon(HeNe), Krypton, Excimer (ArF, KrF), Ruby, Sapphire, Neodymium(Nd):YAG, CO2 2. Power: max. output in Joules or Watts 3. Wavelength(s) in µm (0.180 -10 3 µm) 4. Duration: Continuous Wave (CW), pulsed, Q-switched Position 1 Position 2 NMSU EHS/dls05