[vlp2228]

Hi,

Can anyone explain to me what does "BOC" mean and how does it affect our results.  We are using Perkin Elmer's Analyst 200 AAS for our hydrides (As and Se) and lately the instrument have been giving messages "changing BOC".  The replicate results usually go off (%RSD >2%) when this message appears.  I tried going to PE's help site but didn't get what I wanted.  Thanks for your help.