ISO 105-A04-1989 PDF

Full title and description

ISO 105‑A04:1989 — Textiles — Tests for colour fastness — Part A04: Method for the instrumental assessment of the degree of staining of adjacent fabrics. This part of ISO 105 specifies an instrumental (instrument-based) procedure as an alternative to the traditional visual assessment for evaluating the degree of staining (transfer/bleeding) onto adjacent fabrics during colour‑fastness tests.

Abstract

This standard describes an instrumental method to assess the degree of staining of adjacent (contact) fabrics in any colour‑fastness test, providing objective measurements in place of, or to complement, the visual grey‑scale assessment. The method defines principle, apparatus, preparation of specimens and assessment/reporting conventions.

General information

• Status: Published (International Standard, confirmed on systematic review).
• Publication date: December 1989 (1989‑12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.080.01 (Textiles in general).
• Edition / version: Edition 1 (1989).
• Number of pages: 2 pages.

(General information above referenced to the ISO bibliographic entry and lifecycle information.)

Scope

ISO 105‑A04:1989 applies to the instrumental evaluation of staining (degree of transfer) of specified adjacent fabrics used in colour‑fastness testing. It is intended to be used with the range of ISO 105 test methods (the colour‑fastness series) whenever an objective instrumental assessment of staining is required instead of, or alongside, visual grey‑scale comparison. The clause structure covers principle, equipment, specimens, procedure and test report requirements.

Key topics and requirements

• Principle of instrumental measurement for staining (spectrophotometric/colourimetric measurement of adjacent fabrics).
• Specification of apparatus and calibration/standardisation requirements for reproducible instrumental assessments.
• Preparation and conditioning of test specimens and adjacent fabrics used for staining assessment.
• Procedure steps for measurement and the calculation/interpretation of staining indices or numerical results.
• Reporting requirements to ensure traceability and comparability with visual assessment methods where applicable.

Typical use and users

Primary users include textile testing laboratories, quality‑control departments of textile and apparel manufacturers, dye and chemical suppliers, certification bodies and research institutions working on dyeing and colour‑fastness. The method is used when objective, instrument‑based data on staining is required for product development, dispute resolution, QC sampling or when visual assessment is impractical or insufficient.

Related standards

ISO 105‑A04 is one part of the ISO 105 series (Tests for colour fastness) which includes general principles (A01), visual assessment aids (A02, A05), various specific test methods for washing, rubbing, light, perspiration, etc., and ancillary parts for reference materials and adjacent fabrics. National and regional adoptions (for example EN/ÖNORM versions) and later related parts addressing digital imaging and instrumental grading expand on or complement A04’s instrumental approach.

Keywords

colour fastness, staining, adjacent fabrics, instrumental assessment, spectrophotometer, colourimetry, ISO 105, textile testing, grey scale alternative

FAQ

Q: What is this standard?

A: ISO 105‑A04:1989 is an ISO standard that specifies an instrumental method for assessing the degree of staining (transfer) onto adjacent fabrics during colour‑fastness tests.

Q: What does it cover?

A: It covers the principle, equipment and procedural steps for instrumental measurement of staining, specimen preparation and the reporting requirements needed to produce objective, reproducible results as an alternative to visual grey‑scale assessment.

Q: Who typically uses it?

A: Textile testing laboratories, manufacturers (quality control and R&D), dye and chemical producers, standards bodies and certification organisations use this method when an objective measurement of staining is required.

Q: Is it current or superseded?

A: The original ISO bibliographic record shows ISO 105‑A04:1989 as published in December 1989 and it has been subject to routine ISO systematic review and confirmation; the ISO record indicates the edition remains confirmed (reviewed) and therefore current as of the latest confirmation noted in the ISO lifecycle. For procurement or compliance use, always check the official ISO catalogue or your national standards body for the absolute latest status before relying on or purchasing the document.

Q: Is it part of a series?

A: Yes — ISO 105‑A04 is one part of the broader ISO 105 series (Tests for colour fastness), which contains many parts covering general principles, individual test methods (washing, rubbing, light, perspiration, spotting, etc.) and reference/adjacent fabric specifications.

Q: What are the key keywords?

A: Colour fastness, staining, adjacent fabrics, instrumental assessment, spectrophotometer, grey scale alternative, ISO 105.