this allowed for minimal 14C contributions to the activity in window B. Although, there was a significant contribution to the activity in region A from the 32P, this overlap was corrected by determining contribution to the counts in region A due to 32P. In addition, it was found that a certain ratio of 32P counts were being detected in both region A and region B; this was corrected by calculating a cross talk value which allowed determinations to be made based on separate samples containing only the initial activities of 14C and 32P respectively: