Get Empowered: Tip #233 | Adding Peak Names to Molecular Weight Standards

By July 7, 2021

Tip #233: Adding Peak Names to Molecular Weight Standards when Performing GPC

Welcome back to Get Empowered! In the last Empower tip-of-the-week blog for Empower Chromatography Data System, we learned how to quantitate a peak at one wavelength using a calibration curve for a different peak at another wavelength with data collected using the PDA detector (Tip #232).

In this week’s tip, we will learn how to add peak names to molecular weight standards when performing Gel Permeation Chromatography (GPC).

Let’s get started.

Step 1

In either Alter Sample or Run Samples, click the ‘Amount’ tool to open the ‘Component Editor’ (figure 1).


Figure 1

Step 2

On the ‘Mol Weights’ tab for the current sample, enter the peak names into the ‘Type’ field [NOTE: you can click ‘Next’ if you have multiple standards to continue entering names] (figure 2).


Figure 2

Step 3

Once you open the Processing Method, click ‘Integrate’ followed by ‘Calibrate or Process the Data.’ The ‘Name’ field in the Peaks table is now populated (figure 3).


Figure 3

Step 4

To add peak names to the chromatogram, right-click on the chromatogram and select ‘Properties’.  Deselect ‘Use MP instead of Name’ and then select ‘Name’ for one of the labels (figure 4).


Figure 4


It’s that easy!

Final Note:   You can use either the Pro or QuickStart interface for this tip.


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Next week in Empower Tip #234: We will answer an Empower user question about Limit of Detection (LOD) and Limit of Quantitation (LOQ).


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Categories: Empower Tips