What is ISO 5647 about?
ISO 5647 is an international standard that covers specifications for quality paper and paperboard.
ISO 5647 specifies a method for determining titanium dioxide content in all kinds of paper and board, in particular coated, or filled products. It comprises two procedures for the final determination of titanium, one of them relying on spectrophotometry and the other on flame atomic absorption spectrophotometry.
ISO 5647 gives technical specifications for terms, the principle, reagents, apparatus, selection of the sample, preparation of ash solution, reagent blank solution, spectrophotometric procedure, flame atomic absorption...