AS ISO 19976.1 pdf download – Copper, lead and zinc sulfide concentrates — Determination of cadmium Part 1: Flame atomic absorption spectrometric method 5 Reagents During the analysis, use only reagents of recognized analytical grade and distilled water or water of equivalent purity. 5.1 Hydrochloric acid, concentrated (ρ 20 1,19 g/ml). 5.2 Hydrochloric acid, diluted 1+1. Slowly add 500 ml...