Following queries received from users through the EDQM HelpDesk, a new FAQ on the system suitability test (selectivity) in assays by chromatographic procedures has been added to the existing series of FAQs dealing with the European Pharmacopoeia & International harmonisation.

This addition is expected to enhance the support to users by clarifying the SST requirements that apply to assays by chromatographic procedures when an analytical procedure similar to the related substances test is used.