We are using Chemstation Data Analysis for Dual column GC data. If results from both columns are greater that 25% RPD, that line is marked with an pound sign (#) in the quantitated report printout. That's the standard in the macro. We need to change the calculation and printout (footer) on the report to reflect > 50% RPD. The logic for this is in a macro, epa.mac I believe. Although the limit can be changed from 0.25 to 0.5 in the calculation line and the text is changed in the footer string, the 25% calculation and footer printer text remain as the original. Only thing I see by remarking out lines and testing is coding like " _$(32206" seem to prevent my changes from becoming active. Short of it is the change needs to be done from 25% to 50% RPD, and the quant report needs to flag and reflect that. Any ideas on how to change the macro effectively are appreciated.
Here's the code I think needs to be changed:
IF Abs((t_amt-cal_pk_amt)/t_amt) > 0.25
mod$ = "#"
IF DUAL_DATA = 1
ltemp$=_$(32206," (f)=RT Delta > 1/2 Window (#)=Amounts differ by > 25% (m)=manual int.")
Thanks for any advise or info on this. Happy Holidays!