From: r_delaney2001@yahoo.com   
      
   Anybody know anything about the innards of those fingertip   
   O2 rate meters? sensor, theory of operation, silicon, etc.?   
      
   I recently had some medical treatment, they were checking it   
   3 times / day, and I'm curious -   
      
   I don't expect chemists to be experts on the electronics,   
   but maybe the chemistry -   
      
   --   
   Rich   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)