ICH Q4B Annex 1 Residue on ignition/sulphated ash

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Current effective version

Adopted guideline

Reference numberCHMP/ICH/222063/06
Effective from01/06/2008
KeywordsSulphated ash, residue on ignition, pharmacopoeia
DescriptionThis 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

Adopted guideline

Draft guideline

In operation: 01/06/2008–present

Published: 01/06/2006

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