1. DANGER Class 3b laser (Position 1) (Position 2)
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 ( µm) 4. Duration: Continuous Wave (CW), pulsed, Q-switched
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
DANGER
Special precautions: __________________ __________________________________________________________
(Position 1)
Laser type/power/wave/duration: ______________ _______________ ____________________
(Position 2)
Class 3b laser

2. DANGER Class 4 laser (Position 1) (Position 2)
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 ( µm) 4. Duration: Continuous Wave (CW), pulsed, Q-switched
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
DANGER
Special precautions: __________________ __________________________________________________________
(Position 1)
Laser type/power/wave/duration: ______________ _______________ ____________________
(Position 2)
Class 4 laser

3. Position 1
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
Position 2
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 ( µm) 4. Duration: Continuous Wave (CW), pulsed, Q-switched