Empower calculation question

[erm0715]

I'm currently using Empower, version 1, and running a related compound analysis. What I want to do may be quite simple, but I cant remember if and how to do it.

I'd like to make empower not calculate the active peak; only using the peak areas for the sample calculations of the few known relateds and their factors as well as unknowns. The main point is I'd like to make a table at the end with publisher to show a sum of known / unknown peaks without having the active peak calculated and in that list.

Any ideas? My only thought was having the response factor 0, but being the active peak I cannot actually change the response factor.

[Chromatographer2010]

You can add a filter to the report method to exclude something based on a field such as component name.

To do this you take your report method into report publisher, right click on the table, select properties. Then select the Order By tab and select the Filter By button. You will need to move the field that you want to exclude by to the right side and add the filtering condition.

[aceto_81]

Use a ccompref in your process method for you mainpeak, and substract the area of ccompref from the total sum.

Ace

[EmpowerGuru]

This works with other fields also, like when you only want tailing for one peak.

Make a custom field = CCoompref1[Area]

Set all the peaks except the active to have a ccompref1 of itself. For example impurity1, set its ccompref1 to impurity 1.

Now in the report replace the area field with the custom field and you will not have a value for the active peak.

this works well for many other situations. it is really worth trying out