Tip #88: Creating Custom Fields in Empower (Part 7)

Welcome back to Get Empowered! In the last Empower tip-of-the-week post for Empower CDS Software, we learned how to modify a Custom Field (Tip #87).

Creating Custom Fields in Empower:

• #82: The basic steps on creating a Custom Field
• #83: How to create a Custom Sample Set Field
• #84: How to create a Component Custom Field
• #85: How to create a Peak Custom Field
• #86: How to copy a Custom Field from one project to another
• #87: How to modify a Custom Field

This week, we will learn how to create a Result Custom Field (Part 7).

In Tip#85, we learned how to create a Peak Custom Field. A Peak Custom Field is a user-defined calculation pertaining to a peak or peaks within the chromatogram. A Peak Custom Field might produce multiple results for the chromatogram. A Result Custom Field is a user-defined calculation pertaining to all of the peaks in the chromatogram and, as a result, produces one result for the entire chromatogram. Today we will create a Result Custom Field to calculate the average peak width of the peaks in our chromatogram. This information is helpful when creating or fine-tuning a processing method.

Let’s get started.

Step 1

Launch the new Custom Field wizard and on the Data and Type Selection screen select Result for the field type and Real for the data type (Figure 1).

Figure 1

Step 2

On the Source Selection screen, the data source defaults to Calculated. Whenever you select either field type Peak or Result, Empower understands that you want to make a calculation (Figure 2).

Figure 2

Step 3

On the Formula Entry screen, scroll to the right in the Operations area, locate AVE( and double-click to add it to the Field area (Figure 3).

Figure 3

Step 4

Scroll to the right in the Fields section and locate Width. Double-click Width to add it to the Field area. Finally, add the right parenthesis character ) to close the equation (Figure 4).

Figure 4

Step 5

On the Numeric Parameters screen, set the desired width (Figure 5).

Figure 5

Step 6

Once the Custom Field has been saved, open the project, process a Sample Set, select a result, and open Review. A Result Custom Field will be visible in the Results window within Review. From the Windows menu, select Results (Figure 6).

Figure 6

Step 7

The individual peak widths are seen in the Peaks table and the Average Peak Width is seen in the Chromatogram Result table (Figure 7).

Figure 7

It’s that easy!

What if we want to calculate the average peak width for certain types of peaks? I will cover that topic in the next Tip.

Final Notes: This procedure can be followed using the QuickStart or Pro interface.

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Next week in Empower Tip #89 – We’ll continue our series on Custom Fields and learn how to modify a Custom Field that applies to specific samples and/or specific peaks (Part 8).

 More resources:

• OnDemand Webinar: Challenges Using Spreadsheets for Calculating and Documenting Laboratory Results in a Regulated Environment. Learn More
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