Dear Israel Ebhohimen ,

The method you refer to takes oleic acid as the reference (or often as the average) for all the different oils present in a sample.

If you know what the most abundant oil (if not the only oil type present) is you can/should adjust the factor.

In a study where the researchers used palmitic acid as reference, they adjusted the factor. For palmitic acid a correction factor of 25.6 was used.

Japir, A. A. W., Salimon, J., Derawi, D., Bahadi, M., Al-Shuja'a, S., & Yusop, M. R. (2017). Physicochemical characteristics of high free fatty acid crude palm oil. OCL, 24(5), D506.

https://www.ocl-journal.org/articles/ocl/full_html/2017/05/ocl170016/ocl170016.html#R27

The explanation for this is that the factor is based on the molecular weight of the oil (divided by 10). So therefor:

-The factor is 28.0 for oleic acid, since the molecular weight of oleic acid is 282,47 g/mol

-The factor for palmitic acid is 25.6, since the molecular weight of palmitic acid is 256,4 g/mol

-The factor for myristic acid should be then 22.8, since the molecular weight of myristic acid is 228,3709 g/mol

Hope this answered your question.

I agree with Rob Keller answer .

Thank you Rob Keller