How to perform first calculations

In this chapter you can find information, how to try the NGA Extension on the NGA demo project for the first time.

Step 1

In the System Configuration window (menu Clarity - System…), select the NGA in the Instrument Type Setting dialog, for example on the Instrument 1.

For more details see also chapter Installation .

Step 2

After saving and closing the System Configuration window, open the appropriate Instrument. Now open the NGA demo project: Click the File - Project… and in the desired window click the Open… button to open the project. Select the DEMO_NGA in the list and click the OK button.For more details see also chapter Project

Step 3

Open the Chromatogram window (it can be opened by clicking on the menu Window - Chromatogram). In the lower part of the Chromatogram window you can see the new NGA Results and NGA Summary tabs. If you can't see any chromatogram, using the File - Open Chromatogram… menu open a chromatogram from the DEMO_NGA\Data folder located in your Clarity Installation directory (by default C:\CLARITY\DataFiles).

Step 4

Click the NGA Results tab and on the right side of the pane you can see the NGA settings, where you can set the calculations parameters. They are saved in special .nga file which enables repeatedly use of the NGA settings on multiple Chromatograms. By clicking the Open… button you can browse to the Clarity Installation directory (by default C:\CLARITY\DataFiles) and in the DEMO_NGA subdirectory select the Demo_nga.nga file. NGA Method is then loaded and active Chromatogram is automatically recalculated even if you select different norms or parameters.

For more details see also chapter NGA Settings .

Step 5

On the left side of the pane, the Result Calculations tab shows the Calculations, in the NGA Results tab you can see what calibrated peaks was processed by the NGA Extension. It depends on the selected norm in the NGA Settings and whether all calibrated peaks are found in the norm. You can find detailed description of the norms supported by the Extension in the chapter "Specification".

More details you can find in the chapter "NGA Results" and in the chapter "NGA Results".

Step 6

All compounds required for the NGA Calculations are saved in the norm table. In case the compound names in chromatogram use different names for the same compounds as in the norm (for example compound names in your language), then you can link them and add them to the calculations. In the NGA Settings click the Edit Link Table… button to link calibrated compound name with the compound name in the norm. Results are then automatically recalculated after any changes in the Link Table window. Link Table is used for all chromatograms, so you need to set it once only.

For more details see also chapter Link Table .

Step 7

In case you have analysis divided into multiple chromatograms, open them in the Overlay mode and click the NGA Summary tab, where you can see the Result Calculations of all opened chromatograms in the table.

For more details see also chapter NGA Summary .