ISO 9658:1990

The method is applicable to the determination of acid-soluble and/or total aluminium content between 0,005 % (m/m) and 0,20 % (m/m). Specifies definition, principle, reagents, apparatus, sampling, procedure, expression of results and test report. The annexes give additional information on the international co-operative tests, a graphical representation of precision data and procedures for the determination of instrumental criteria.