The following guideline can be ordered through the address listed in the "Source/Publisher"-category.
In cases in which you can order through the Internet we have established a hyperlink.
Guideline on Control of Impurities of Pharmacopoeial Substances: Compliance with the European Pharmacopoeial General Monograph "Substances for Pharmaceutical Use" and General Chapter" Control of Impurities in Substances for Pharmaceutical Use"
This guideline describes the process of revision for the EDQM and the licensing authorities for old monographs of pharmacopoeial substances which do not comply with today's requirements for impurities, mainly related substances.