From: greif1nospamhere@rochester.rr.com   
      
   I am working on a Cary 5 spectrophotometer which seems to have low   
   energy. The spinning mirror and first lamphouse mirror are quite covered   
   in what looks like fine hazy dust. I have been told to clean the first   
   mirror, and the spinning mirror looks bad enough I think it needs   
   cleaning also.   
      
   I have some cotton wool as well as reagent grade acetone, iso-alcohol,   
   and methyl alcohol on order.   
      
   Will I be safe enough(and clean enough)with very very gentle wiping? I   
   know I am not supposed to touch gratings at all, but are other mirrors   
   ok for this treatment?   
      
   Any info on technique appreciated!   
      
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