Data Analysis includes the same integration algorithms as available in both OpenLAB CDS ChemStation Edition and OpenLAB CDS EZChrom Edition. The processing method supports all the initial and timed events from ChemStation or EZChrom. In each method, you must select the integrator that you want to use.
Agilent has conducted an extensive number of tests comparing integrator results from Data Analysis and ChemStation/EZChrom to ensure compatibility between the results from the two software packages. The tests include a variety of different signal types and peak forms. Differences that have been observed in these tests are in general below 0.1 % of the peak area/height, due to minor improvements in accuracy of the integrator algorithms.
For the EZChrom integrator, rounding differences may occur compared to OpenLAB CDS EZChrom Edition. The EZChrom integrator in Data Analysis does not round anything (for example, an area can be shown as 102.9861234), whereas EZChrom Edition rounds the values for area and height to the next integer (for example, the same area would be shown as 103).
Prerequisites
To be able to carry out the procedure as described, you need the privilege Processing Method > Edit general parameters. Privileges are configured in the Control Panel.
If the project enforces method approval, the method status must be Generic. For details, see Method approval.
Under Methods in the navigation pane, select the processing method you want to edit.
In the Processing Method window, select the General > Properties node.
Select the Global tab.
Select the required integrator.
The corresponding method section with the specific integration events becomes visible.
If you already have calibrated your method with the previously chosen integrator, recalibrate it.
| If you change the integrator, all existing calibration curves are removed from the method. You can still view the calibration curves stored in the result data, but in order to reprocess a sample you must first reprocess your calibration standards with the current integrator. This way the application ensures that your results are always based on the correct integrator. |