Use Empirical APF Values
This option will either enable or disable the use of empirical APFs (Area Peak Factors) for subsequent quantitative analysis to correct for spectral peak shape and shift. This option is automatically loaded if empirical APFs are specified by the user. Use this option to easily determine the total effect of all of the empirical APFs specified by the user, on a quantitative analysis. See the Analytical | Empirical APFs menu to select empirical APF factors from the default EMPAPF.DAT database (a user editable text file).
There are two options for Empirical APF factor:
Use Empirical APF Factors (calculated from elemental composition)
Use Specified APF Factors (based on a fixed composition)
Compound APFs