Direct eye contact with the output beam from the laser will cause serious   damage and possible blindness.  | 
                           
                        
                     
                        The safe use of lasers requires that all laser users, and everyone near   the laser system, are aware of the dangers involved. The safe use of the laser   depends upon the user being familiar with the instrument and the characteristics   of laser light. 
                      If the laser beam is reflected or scattered from various objects, it is very   dangerous. Avoid physical contact with the laser beam. The high spectral   intensity and short wavelength may cause tissue damage which is not immediately   evident. 
                      
                          
                            
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                              Do not permit any reflective object in the path of the beam. Scattering the   beam from a reflective surface can be very damaging to the eyes or   skin.  | 
                             
                            
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                              Block the beam when not in use.  | 
                             
                            
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                              Turn the beam off, preventing stray reflections from occurring either between   experiments or when moving the laser.  | 
                             
                            
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                              If possible, have an enclosed path for the laser beam.  | 
                             
                            
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                              Always point the laser at a specific target, such as a power   meter.  | 
                             
                            
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                              Limit access to the laser to qualified users who are familiar with laser   safety practices and who are aware of the dangers involved.  | 
                             
                            
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                              Post warning signs indicating the laser is being used.  | 
                             
                            
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                              Never point the laser beam at anyones' eyes.  | 
                             
                          
                       
                      CDRH (Center for Devices & Radiological Health) 
                      A department of the United States Food and Drug Administration, the Center   for Devices and Radiological Health establishes the safety regulations and   requirements governing the manufacture of lasers and laser devices within the   United States, along with many other responsibilities. 
                    
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