ICH Q4B Annex 1 Residue on ignition/sulphated ash

Current effective version

PDF iconAdopted guideline

Reference number CHMP/ICH/222063/06
Published 01/11/2007
Effective from 01/06/2008
Keywords Sulphated ash, residue on ignition, pharmacopoeia
Description This annex is the result of the Q4B process for Residue on Ignition/Sulphated Ash. The proposed texts were submitted by the Pharmacopoeial Discussion Group. It aims to facilitate the recognition of pharmacopoeial procedure for the residue on ignition/suplhated ash test by regulatory authorities in the ICH regions. It describes special requirements for this test to be considered interchangeable for use in the ICH regions.

Document history

First version

Current version

PDF iconAdopted guideline


PDF iconDraft guideline

In operation: 01/06/2008–present


Published: 01/06/2006

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