Peak ratio calculation
we perform a limit test (CE analysis) with internal standard. The following detail s are given for evaluation:
-corrected areas: divide all the peak areas by the corresponding migration times;
-correction factors: for the calculation of content, multiply the ratio of time-corrected peak areas of impurity and the internal standard by the corresponding correction factor: impurity X = 3.0;
-impurity X: not more than 1.5 times the ratio of the area of the peak due to API to the area of the peak due to the internal standard in the electropherogram obtained with reference solution (b) (1.5 per cent);
Are there any peak fields which calculate the ratio of time-corrected peak areas of impurity and the internal standard? Or should we create new Custom fields?
Thanks in advance!!