Fusions are carried out with a strong alkali to ensure total basic oxide conversion. The resulting acidified solutions are instrument-finished for required major analytes.
Three (3) acid digestions, HNO3; HClO3 & HF are carried out on samples for trace level analyses.
Oxide and sulphide specie differentiation is carried out by specific leach types, depending on the element with an instrument finish. Examples are Cu oxide or sulphide leaches with an AA finish.