The standard specifies the procedure for determining by atomic absorption spectrometry (AAS) or by inductively coupled plasma emission spectrometry (ICP / ES) the content of acid-soluble magnesium, calcium, manganese, iron, copper, sodium and potassium . The acid-soluble element comprises the part of the acid-soluble incineration residue, i.e. that part of the ignition residue obtained after incineration which is soluble in hydrochloric acid or nitric acid. If the residue is totally soluble, the result obtained from the procedure specified in the standard is a measure of the total quantity of each element present in the sample.
The standard is applicable to all types of paper, cardboard, pulp and cellulose nanomaterials.
The limit of determination depends on the element and instrument used.