AS 1580.203.1-2004 PDF

Full title and description

AS 1580.203.1-2004 — Paints and related materials — Methods of test, Method 203.1: Skin formation. This short procedural standard specifies alternative laboratory methods for determining the susceptibility of paint products to form a surface skin during storage.

Abstract

This method gives procedures (including Method A and Method B) to assess whether and how quickly a paint or related coating will skin in its container under defined storage conditions. The document summarizes principle, apparatus, sample preparation, test procedure and reporting requirements in a concise two-page format.

General information

• Status: Withdrawn — the standard was withdrawn on 6 June 2019.
• Publication date: 01 January 2004.
• Publisher: Standards Australia (AS).
• ICS / categories: 87.040 — Paints and varnishes (paints and related materials).
• Edition / version: 4th edition (2004).
• Number of pages: 2 pages (concise methods sheet).

Scope

Sets out alternative laboratory procedures to determine the susceptibility of paints and related materials to skinning during storage. The procedures are intended for quality control, formulation evaluation and research into shelf stability of liquid coatings. The standard does not cover long-term degradation mechanisms beyond the formation of a surface skin.

Key topics and requirements

• Definition and principle of skin formation in stored paints (what constitutes a “skin”).
• Apparatus and test conditions required to reproduce storage-like skinning (including controlled temperature/humidity references where applicable).
• Sample preparation and conditioning prior to test.
• Two alternative procedures (Method A and Method B) describing observation intervals, pass/fail criteria and reporting.
• Required test report content (results, conditions, deviations and any safety notes).
• Notes on occupational health and safety relevant to handling test samples and reagents.

Typical use and users

Used by paint and coatings manufacturers, formulation chemists, quality assurance and control laboratories, third‑party test houses and academic researchers studying shelf‑life or storage stability of coatings. Because the standard is withdrawn, users referencing it should confirm whether a current alternative method or company/internal procedure is preferred for certification or regulatory purposes.

Related standards

Commonly referenced and related documents include other parts of AS 1580 (general test conditions and sample preparation) and related ISO/EN test methods for drying and skinning behaviour of paints. Example cross-references in the historic bibliographic record include AS 1580.101.4 (conditions of test) and AS/NZS 1580.103.1 (examination and preparation of samples).

Keywords

skin formation; paints; coatings; methods of test; storage stability; shelf life; quality control; AS 1580; skinning; film formation.

FAQ

Q: What is this standard?

A: AS 1580.203.1-2004 is a short Standards Australia test method entitled "Paints and related materials — Methods of test, Method 203.1: Skin formation", describing laboratory procedures to evaluate susceptibility of paints to skin on storage.

Q: What does it cover?

A: It covers the principle, apparatus, sample preparation, two alternative test procedures (Method A and Method B), test execution and reporting requirements to determine if and when a paint forms a surface skin in storage-like conditions. It is not a long-form durability standard.

Q: Who typically uses it?

A: Paint and coatings manufacturers, QC/QA labs, independent test houses and researchers concerned with formulation stability and shelf life. Historical users may consult it for legacy product records.

Q: Is it current or superseded?

A: The 2004 edition is withdrawn (withdrawn date listed as 6 June 2019). Users should not treat the withdrawn version as a current standard for regulatory compliance and should check with Standards Australia or national standards bodies for any replacement or newer methods.

Q: Is it part of a series?

A: Yes — it is one method within the AS 1580 series (Paints and related materials — Methods of test). Several related parts cover sample preparation, test conditions and other performance tests for coatings. The document history shows earlier editions back to 1957 and revisions in 1975, 1980 and 1993 prior to the 2004 edition.

Q: What are the key keywords?

A: Skin formation, skinning, paint storage stability, AS 1580.203.1, methods of test, coatings, shelf life, QA/QC.