Get Empowered: Empower Tips #50 – A Year in Review

By January 4, 2018

Tip #50: A Year in Review

Welcome back to Get Empowered and Happy New Year to all! I want to begin by saying thank you for following our blog, subscribing to our weekly email, and submitting lots of great questions.

To kick-off the new year, I thought it would be helpful to summarize what we covered in 2017 and share with you a few of the questions I have received.

Let’s get started.

Here is a review of the topics we covered on how to get the most from Empower Software:

  • QuickStart Interface: Overview (Tips #1-#3).
  • Browse Project: Finding/sorting information in the project window and using the tools within the project window to find information related to results (Tips #4-#10 & Tip #11).
  • Data Acquisition and the Sample Set Method: Saving Instrument Methods in Method Sets and Interactive System Suitability (Tips #12-#14).
  • Review Window and the Processing Method: Numerous topics (Tips #15-#20, Tips #21-#30, Tips #31-#40, Tips #41-#49).

Throughout the year, we received some really great questions. I would like to share two of my favorites:

Question 1

What is the difference between baseline noise and peak-to-peak noise?

  1. Baseline Noise: Baseline noise is calculated based on the maximum voltage change over a 30-second interval (or a 30 data-point interval). The reported noise value is an average of the number of intervals as determined by the % Run Time over which to average parameters on the Suitability tab of the processing method.
  2. Peal-to-Peak Noise: Total peak-to-peak noise in the detector signal over a specified time region in the chromatogram (specified in the Noise and Drift tab of the processing method) in detector units. Peak to peak is defined as the sum of the maximum and minimum differences (residuals) between each data point and the least squares line.

Question 2

How can I process multiple wavelengths as derived channels from 3D PDA data in Empower Software?

  1. Derive a Channel in the Method Set and on the First (Only) Tab select PDA: Single Wavelength from the Channel drop-down list.
  2. Enter the wavelength, click OK, and give the Derived Channel a name.
  3. The Derived Channel appears in the channel table within the Method Set. Select the appropriate Processing Method from the Processing Method drop-down list.
  4. Repeat steps 1-3 for as many wavelengths as you want to extract and process.
  5. When you process with the Method Set it will automatically extract and process the channels (wavelengths) specified.


I hope you continue to Get Empowered in 2018!

Throughout the year I will discuss some new topics, i.e., the different types of noise that Empower calculates, what Acceptance Criteria Limits are and how they can be used, plus many more.

Please continue to send me your suggestions for future tips and keep the questions coming. Next week we will pick up where we left off and continue with our series on Deriving Channels, in particular from 3D data such as PDA and MS.



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Next week in Empower Tip #51: Deriving Channels in Empower (part 4)

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Categories: Empower Tips