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Standard´s number: | ISO 423:1994 |
Pages: | 6 |
Edition: | 2 |
Released: | 1994 |
DESCRIPTION
ISO 423:1994
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.