A Preface
ISO (International Organization for Standardization) is a global alliance of national standards bodies (ISO member bodies). The development of international standards is usually carried out through ISO technical committees. Each member institution interested in a subject on which a technical committee has been established has the right to be represented in the committee. Government and non-governmental international organizations that liaize with standardization organizations are also involved in this work.

Draft international standards adopted by technical committees are circulated to member bodies for approval before they are accepted as international standards by the ISO Council. They are approved according to ISO procedures that require at least 75% approval by voting member institutions.

The international standard ISO 3856/2 was developed by Technical committee ISO/TC 35 (Paints and varnishes).

ISO 3856/2 was first published in 1980. The second edition cancels and replaces the first edition, which was thoroughly revised.

ISO 3856-2-1984 “Paints and varnishes – Determination of” soluble “metal content – Part 2: Determination of antimony content – Flame atomic absorption spectrometry and rhodamine B spectrophotometric method”

0 Introduction
This international standard is part of ISO 3856, Paints and varnishes – Determination of “soluble” metal content.

Scope and field of application

This part of ISO 3856 describes two methods for the determination of antimony content of test solutions prepared according to ISO 6713 or other appropriate international standards.

The method is suitable for coatings with a “soluble” antimony content in the range of approximately 0.05% to 5% (m/m).

In case of dispute, the flame atomic absorption spectroscopy (AAS) method (Article 3) shall be used as the referee method. Other methods can be used by agreement between the parties involved. If spectrophotometry is agreed, rhodamine B spectrophotometry should be used (clause 4).

ISO 3856-2-1984 “Paints and varnishes – Determination of” soluble “metal content – Part 2: Determination of antimony content – Flame atomic absorption spectrometry and rhodamine B spectrophotometric method”

2 Reference Materials
ISO 385/1, laboratory glassware – Burettes – Part; General requirements.

ISO 648, Laboratory glassware — Single label pipettes.

ISO 1042, Laboratory glassware — Single-labeled volumetric flasks.

ISO 3696, laboratory water use — Specification. 2)

ISO 4800, Laboratory glassware — Separation funnel and drip funnel.

ISO 6713, Paints and varnishes — Preparation of acid extracts from paints in liquid or powder form.

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