I run a related substances method and have Two CF's for calculating Percentage Impurities. 1. Percent_Impurity and 2. Percent_Impurity_GTE0.1%.

If I split my report method into 2 tables- KNOWN and UNKNOWN Impurities, will the second custom field still only Sum the Percent Impurities GTE 0.1% for Known and Unknown or will it sum ALL of the impurities GTE 0.1%? I have the tables filtered by Known and Unknown Peaks so I presume this will be enough?

Any thoughts?