Creating a Combined Result Set in OpenLab ChemStation

Answer

This Information Applies To: Agilent OpenLab ChemStation

Issue

In OpenLab ChemStation, creating a result set by combining multiple existing result sets can be useful in the following scenarios:

• Combining single samples, sequences, or a combination of both that can be reprocessed with a specific method.
• Combining data from different sources in the same result set.
• Shortening a sequence.

Caution: Before creating a combined result set, consider your company's data integrity policies and procedures.

Steps to Follow

A new result set is created from data files that you have added to the navigation table. 

1. Launch an offline instrument of OpenLab CDS ChemStation and select the Data Analysis view.

2. From the left navigation table, double click the sequence or single run of interest. This example uses the LC_Demo1 sequence (see Figure 1).

   
   
   Figure 1. Data Analysis view
   1. Navigation table, 2. Data files of selected sequence
   
   

3. Right-click another sequence or single run that includes data files that you would like to add into the new result set. From the contextual menu, click Add Data Files... e.g., LC_Demo 2 (see Figure 2).

   
   
   Figure 2. Select Add data file from another sequence or single run
   
   

4. From the Add Data Files [Sequence Folder] dialog box, select the data files to add to the new result set and click OK (see Figure 3).

   
   
   Figure 3. Add Data Files dialog box
   1. Add data files, 2. OK button
   
   

5. The navigation table now includes all data files of interest. Next, press and hold the CTRL key and select the files you want to include in a new result set.
   From the Sequence menu, click Create New Result Set. (See Figure 4)

   
   
   Figure 4. Select the files and create New Result Set
   
   

6. From the Create New Result Set dialog box, select a method to be associated with the new result set, and specify a path and folder name for the new result set. Sort the samples using the tools on the right of the table (optional), then click OK (see Figure 5).

   Tips: The position of a blank file (sample type Blank) is relevant for the evaluation of the signal-to-noise ratio as defined by European Pharmacopeia(EP). See also signal-to-noise calculation in OpenLab ChemStation.

   
   
   Figure 5. Create New Result Set dialog box
   1. Browse to select a method, 2. Destination data path, 3. Destination folder name, 4. Reorder Samples button, 5. OK button
   
   

7. You can now see the new result set in the Data Analysis pane. Load it as any other result set (see Figure 6).

   
   Figure 6. Data files of a new result set
   
   

Learn how to effectively operate your Agilent OpenLab ChemStation:  OpenLab ChemStation Concepts and Workflows e-learning path available from Agilent education