Leica Biosystems LPC Operating Manual - Manual (Page 39)

39 Leica LP C
••••• Class 2:
This classification applies only to continuous wave (CW) and repetitive-pulse lasers and
laser systems of the visible part of the electromagnetic spectrum (400 – 700 nm) that exceed
Class 1 levels, but do not exceed an average radiant power of 1 mW.
••••• Class 3a:
Lasers and laser systems that have an accessible output between one and five times the
Class 1 AEL for wavelengths shorter than 400 nm or longer than 700 nm, or less than five
times the Class 2 AEL for wavelengths between 400 and 700 nm. Lasers of this class have
intermediate power ranges of 1 - 5 mW.
••••• Class 3b:
Lasers and laser systems having the power range between 5 - 500 mW. This applies to la-
sers with wavelength ranges from Ultraviolet through Far Infrared (180 nm – 100,000 nm +).
These lasers or laser systems can produce a hazard if viewed directly, and may produce an
eye hazard when viewing diffuse reflections off of a shiny surface at angles of less than
5 degrees from the source, however Class 3b lasers should not produce a hazardous diffuse
reflection from a matte (not shiny) surface.
••••• Class 4:
Lasers and laser systems having power greater than 500 mW. This applies to lasers with
wavelength ranges from Ultraviolet through Far Infrared (180 nm – 100,000 nm +). This class
of laser poses the greatest hazard, and any and all precautions should be taken to protect
oneself from exposure to direct or diffuse laser radiation. Direct exposure to the eye from
this class of laser can cause permanent damage. Stray beams are potential fire hazards and
combustible material should be kept out of beam paths at all times.
ANSI Z136.1 requires specific control measures for each laser classification and the en-
vironment in which they are used. The chart above lists some of the requirements that
may need to be implemented in a laboratory setting. The Biosystems Laser Safety Offic-
er, or designee, should reference the applicable safety regulations for appropriate con-
trol measures to implement in the area the instrument will be used.
7. Appendix A – Laser Safety