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The way the spectral integrals are converted into meaningful, quantitative information in SMA is manually determined by you using the Formula Editor located in the** “Experiment” **panel. You have full control over the calculation method and you define how quantification is performed for a constituent by **entering basic maths functions** in the formula editor.

- Using an internal concentration reference material.
- Weight %s
- Other, to match the standard.

- A concentration reference compound can be used to derive a
*CCF,*which can then be used to determine other component concentrations. - Spectral math: use areas and sample-specific data from more than one experiment.
- Take averages when >1 spectral region or multiplet is available for a component.
- Use concentrations of other components, which is convenient when there are overlapping peaks.
- Use 1D and 2D datasets – or both, in a single analysis.
- Integral data is obtained from the spectra.

The equation editor **includes advanced math functions** (to get statistical analysis for example). You can find below an example where we calculated the purity based on four different multiplets for the same compound, **API_1_x **(x=1-4); using DMP as reference:

We can use the equation editor to calculate the concentration for each of these components:

**C_API_1_x**

Then we could get the ‘Average’ by using the formula below:

0.25*(**C_API_1_1 **+**C_API_1_2**+**C_API_1_3**+**C_API_1_4**)

And also the ´Standard deviation´ using this formula:

Math.sqrt(0.25*(Math.pow(**C_API_1_ave**–**C_API_1_1,2**)+Math.pow(**C_API_1_ave**–**C_API_1_2,2** )+Math.pow(**C_API_1_ave**–**C_API_1_3,2**)+Math.pow(**C_API_1_ave**–**C_API_1_4,2**)))

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