ISO 105-J02-1997 PDF

Full title and description

ISO 105-J02:1997 — Textiles — Tests for colour fastness — Part J02: Instrumental assessment of relative whiteness. This international standard specifies an instrumental method for quantifying the relative whiteness and tint of textile specimens (including fluorescent materials) using CIE-recommended formulae for commercial and laboratory evaluation.

Abstract

ISO 105-J02:1997 defines procedures and calculation formulae to determine the perceived whiteness and any tint (reddish/greenish shift from a bluish neutral) of textiles by instrumental measurement. The method produces relative, not absolute, whiteness values and is intended for specimens that are commercially described as white and that are measured on the same instrument under similar conditions; it is suitable for assessing impurities and the effect of fluorescent whitening agents.

General information

• Status: Published; confirmed as current following periodic review (confirmed in 2024).
• Publication date: December 1997 (Edition 2, 1997-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.080.01 (Textiles in general).
• Edition / version: Edition 2 (1997); Technical Corrigendum 1 published 1998.
• Number of pages: 8 (official ISO publication length for the 1997 edition).

Scope

This part of ISO 105 specifies an instrumental test method to quantify the whiteness and tint of textile specimens, including those containing fluorescent whitening agents. It is intended for comparative evaluations between specimens of the same type measured on the same instrument in close temporal proximity; the method uses CIE-recommended formulae and is suitable for commercial quality-control and laboratory reporting where relative whiteness is required.

Key topics and requirements

• Definition and calculation of whiteness and tint using CIE-recommended formulae for instrumental colour measurement.
• Instrumental measurement conditions and restrictions (comparisons limited to specimens of the same textile type, same instrument, and near-simultaneous measurement).
• Consideration of fluorescence (fluorescent whitening agents) and how fluorescence affects measured whiteness values.
• Use of the method to indicate the presence of impurities or the effectiveness of optical brighteners.
• Reference to a 1998 technical corrigendum that corrects or clarifies elements of the 1997 text.

Typical use and users

Common users include textile testing and quality‑control laboratories, textile and apparel manufacturers, dye and finishing houses, suppliers of optical brighteners, and research groups working on colorimetry and whiteness assessment. The method is typically used for production QC, supplier comparison, and R&D where relative whiteness and tint data are required.

Related standards

ISO 105 is a multipart series covering tests for colour fastness and related measurement methods. Related parts include ISO 105-J01 (general principles for measurement of surface colour), ISO 105-J03 (calculation of colour differences), ISO 105-J05 (colour inconstancy with change of illuminant), and the many ISO 105 parts addressing specific colour‑fastness tests (B, C, D, E, N, etc.). ISO 105-J02 is commonly referenced alongside other J‑series and A‑series parts for comprehensive colour measurement and assessment.

Keywords

whiteness; tint; instrumental assessment; colour measurement; CIE formulae; fluorescent whitening agents (FWA); textiles; colour fastness; ISO 105; quality control.

FAQ

Q: What is this standard?

A: ISO 105-J02:1997 is an ISO standard that specifies an instrumental method to assess the relative whiteness and tint of textile specimens.

Q: What does it cover?

A: It covers the procedures, calculation formulae (CIE-based), and measurement restrictions needed to produce relative whiteness and tint values for textiles, including consideration of fluorescence from whitening agents.

Q: Who typically uses it?

A: Textile testing labs, manufacturers, dye and finishing operations, suppliers of optical brighteners, and research laboratories use this method for QC, supplier comparisons, and R&D.

Q: Is it current or superseded?

A: The 1997 edition (Edition 2) remains the published version and was last reviewed and confirmed (status: confirmed) during ISO's periodic review; a technical corrigendum was published in 1998 to correct the original text. Users should verify national adoptions or updates, but ISO lists the 1997 text as the current published edition confirmed in 2024.

Q: Is it part of a series?

A: Yes — ISO 105 is a multipart series of standards for tests for colour fastness and related colour-measurement methods; J02 is one part (J‑series) focused on instrumental whiteness assessment and is commonly used with other ISO 105 parts.

Q: What are the key keywords?

A: Whiteness, tint, CIE colourimetry, instrumental assessment, fluorescent whitening agents, textile colour measurement, ISO 105.