I am a new Empower user. I have a sample that has known concentrations of two Actives. I am trying to quantitate each impurity against the appropriate standard. Normally you would have one sample weight. Because I want to calculate the percent impurity based off different sample weights I am having to process the data twice. One option is to correct forthe sample weight in the RRF. Another option is to build a custom field. Where is the best place to make the sample weight switch reprocessing, RRF, or custom fields? If in the custom fields would you use the CConst portion of the component table?