Leica Biosystems LPC Operating Manual - Manual (Page 38)

38 Operating Manual V 1.0 – 06/2010
7. Appendix A – Laser Safety
7.1 Laser hazard classes
The intent of laser hazard classification is to provide clear distinction of the lasers’ properties
and hazards to users so appropriate protective measures can be taken. Classification is based on
the maximum output available for the intended use. Specific labeling requirements indicate that
the class of the laser as well as the emission wavelength(s) and any other applicable precaution-
ary instructions must be included on any signage. Laser classification is also used for determin-
ing requirements for medical surveillance for those individuals working with and around lasers.
The US standard for laser safety [21 CFR 1040.10], the ANSI standard [ANSI Z136.1] and the inter-
national standard [EN 60825] classify lasers into five different hazard categories. These classes
are based upon the combination of wavelength range, power, and emission duration, which are
used to determine the level of risk and the potential to cause biological damage to the eye or
skin.
The definitions compiled from ANSI Z136.1 are as follows:
The Leica LPC Laser Cassette Printer, Model LPC is rated as follows:
• CLASS 1 laser product using a CLASS 4 embedded laser
(5 W, 10.57 – 10.63 µm)
• Class 1:
Any laser, or laser system containing a laser, with wavelength ranges from Ultraviolet through
Far Infrared (180 nm – 100,000 nm +), that cannot emit laser radiation levels exceeding
Class 1 Accessible Emission Limits (AEL) as defined by ANSI Z136.1. For example this would
compute to exposure (for a 48-hour period) for a 488 nm laser of no greater than 0.2 mW.
Basically, the laser radiation level emitted by a device classified as Class 1 produces no haz-
ard whatsoever to the user during normal operation. Presently, Class 1 lasers and laser sys-
tems are exempt from all control measures. The Class 1 designation does not apply during
times of maintenance or service where the safety controls of the device are defeated or
otherwise removed. The Class 1 environment resumes once the device is returned to its orig-
inal state with all safety devices properly reconnected.