ISO 778:2005 PDF

Scope: This International Standard specifies the procedure for the determination of acid-soluble copper by atomic absorption spectrometry or by plasma emission spectrometry. It is applicable to all types of paper, board and pulp. It specifies a method to determine the acid-soluble part of the incineration residue, i.e. that part of the ignition residue obtained after incineration which is soluble in hydrochloric acid. If the residue is completely soluble, the result obtained by the procedure specified in this International Standard is taken as the total amount of copper in the sample. The limit of determination is normally 0,1 mg/kg of paper, board or pulp, but it depends on the spectrometer used.

ISO 778:2005 Referenced Document

ISO 1762 Paper, board, pulps and cellulose nanomaterials — Determination of residue (ash content) on ignition at 525 °C*， 2019-07-17 Update
ISO 186 Paper and board - Sampling to determine average quality
ISO 287 Paper and board - Determination of moisture content of a lot - Oven-drying method*， 2017-11-01 Update
ISO 638 Paper, board and pulps - Determination of dry matter content - Oven-drying method*， 2008-10-01 Update
ISO 7213 Pulps — Sampling for testing*， 2021-12-07 Update

2005 ISO 778:2005 Paper, board and pulp - Determination of acid-soluble copper
2001 ISO 778:2001 Paper, board and pulp - Determination of copper
1982 ISO 778:1982 Pulps; Determination of copper content; Extraction-photometric and flame atomic absorption spectrometric methods