OBJECTIVE or GOAL
Calculating signal-to-noise using the noise from within the same chromatogram
- Empower 2
- Empower 3
This procedure requires a license for the system suitability option , and the project in which the data is being processed has the system suitability option enabled.
Use the wizard to create a processing method, click on the image in red frame above to enter the Noise and Drift interface, as shown in the figure. Fill in the appropriate baseline noise start and end time according to the chromatogram, and the minimum slice width is 10 seconds, the maximum value is less than or equal to the difference between the start and end time of the baseline, and the upper limit is 300 seconds.
Select the Suitability tab, check Calculate Suitability Results, enter 1 or the measured value in Void Volume Time. Select Peak to Peak Noise or Average Peak to Peak Noise for the S/N noise value, then click on File > Save > Processing Method in the Menu bar.
After saving the processing method, click on Integrate , then Quantitate or Calibrate , you can use this processing method to calculate s/n.
s/n is not displayed by default, you need to click go back to the Home page. Right click on Table Properties in the table . Uncheck the s/n, click Apply, then the s/n will be displayed in the form.
If you want to display it in future, click Save Preferences under File.