ISO 105-G04-2016 PDF

Full title and description

ISO 105‑G04:2016 — Textiles — Tests for colour fastness — Part G04: Colour fastness to nitrogen oxides in the atmosphere at high humidities. This part of ISO 105 specifies a laboratory test method to determine the resistance of textile colour to the action of nitrogen oxides under elevated temperature and high relative humidity conditions.

Abstract

ISO 105‑G04:2016 defines a procedure for exposing test specimens (and control fabrics) to nitrogen oxides in a controlled high‑humidity atmosphere at elevated temperature in order to assess colour change and fading. The standard indicates that for testing at lower humidities the related part ISO 105‑G01 should be used.

General information

• Status: Published (International Standard, confirmed).
• Publication date: 2016 (ISO record shows 2016‑06; catalog records indicate availability from late May 2016).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.080.01 (Textiles).
• Edition / version: Edition 2 (2016).
• Number of pages: 7.

Scope

Specifies a laboratory method to determine the colour fastness of textile materials to nitrogen oxides when exposed in an atmosphere maintained at elevated temperature and high relative humidity. The procedure compares the test specimen with a control fabric and uses repeated exposure/assessment cycles to determine the extent of colour change or fading. For tests at lower relative humidities, ISO 105‑G01 is referenced.

Key topics and requirements

• Controlled generation and exposure of nitrogen oxides to test and control fabrics under specified temperature and high relative humidity conditions.
• Use of a reference (control) fabric and objective assessment of colour change/fading after one or more exposure cycles.
• Repeatable exposure/measurement cycles to determine the level of resistance (rating) of the specimen.
• Cross‑reference to other ISO 105 parts for related environmental agents and lower‑humidity testing (for example ISO 105‑G01).
• Intended to be used alongside the general ISO 105 test series conventions for specimen preparation and evaluation.

Typical use and users

Used by textile test laboratories, colour technologists, textile manufacturers, quality assurance professionals, and standards bodies to evaluate and document the resistance of dyed and printed textiles to atmospheric nitrogen oxides in high‑humidity environments (for example in investigations of indoor/outdoor urban pollution effects on textile colour).

Related standards

Part of the ISO 105 series (Tests for colour fastness). Related parts include ISO 105‑G01 (colour fastness to nitrogen oxides at lower humidities), ISO 105‑C06 (domestic and commercial laundering tests) and many other ISO 105 parts covering light, water, perspiration, rubbing, bleaching and dry‑cleaning tests.

Keywords

colour fastness, nitrogen oxides, oxides of nitrogen, high humidity, textile testing, ISO 105, colour change, fading, exposure test

FAQ

Q: What is this standard?

A: ISO 105‑G04:2016 is a part of the ISO 105 series that provides a standardized laboratory method for assessing textile colour fastness to nitrogen oxides in atmospheres with high relative humidity.

Q: What does it cover?

A: It covers the controlled exposure of test specimens and control fabrics to nitrogen oxides at elevated temperature and high humidity, and the subsequent assessment of colour change and fading using repeatable exposure/measurement cycles. For lower humidity testing see ISO 105‑G01.

Q: Who typically uses it?

A: Textile test laboratories, manufacturers, QA/QC teams, dye houses and standards organizations that need to evaluate how resistant textile colours are to atmospheric nitrogen oxides under humid conditions.

Q: Is it current or superseded?

A: ISO 105‑G04:2016 is the current published edition (second edition, 2016). It revised and replaced the earlier ISO 105‑G04:1989. The ISO record shows the 2016 edition as published and confirmed in the ISO lifecycle.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 105 family of standards (Tests for colour fastness), which contains many parts addressing different agents and test methods (washing, light, water, perspiration, rubbing, ozone, gases, bleaching, etc.).

Q: What are the key keywords?

A: Colour fastness; nitrogen oxides; oxides of nitrogen; high relative humidity; textile testing; ISO 105; fade resistance; exposure cycles.