Guidance for industry [electronic resource] : Q4B evaluation and recommendation of pharmacopoeial texts for use in the ICH regions, annex 1, residue on ignition/sulphated ash, general chapter.
Imprint
Rockville, MD : U.S. Dept. of Health and Human Services, Food and Drug Administration, Center for Drug Evaluation and Research (CDER) : Center for Biologics Evaluation and Research (CBER), [2008]