This standard was last reviewed and confirmed* in 2016.
Establishes criteria for the purity and describes the test methods for identity tests, residue after ignition, heavy metals content, iron content, appearance of solution. Annex A describes preparation of the standard ammonium cerium(IV) hexanitrate solution.
Document published on: 1994-04-21 Edition: 2 (Monolingual) ICS: 37.040.30 Status: Published Stage: 90.93 (2016-06-17) TC/SC: ISO/TC 42 Number of Pages: 6
Revises: ISO 423:1976
No corrigenda or amendments available