I want to use caffeine in a research, but I need to know if it is a primary standard or if I have to standardize it.
Yes , possible Caffeine use as standard to determination phenolic Compounds
Hi Lucas, Ali is correct, but remember you need know purity of caffeine standard for use in an analytical analysis.
For analytical purposes, it is the best to use a certified reference material, for example https://www.sigmaaldrich.com/catalog/product/sial/56396?lang=de®ion=DE
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