ISO 105-J02-1997 cor1-1998 PDF

Full title and description

ISO 105-J02:1997 (including Corrigendum 1:1998) — Textiles — Tests for colour fastness — Part J02: Instrumental assessment of relative whiteness. This part of ISO 105 specifies an instrumental, CIE-based method for quantifying the relative whiteness and tint of textiles (including materials treated with fluorescent whitening agents) using reflectance measurements and standardised calculation formulae to produce whiteness and tint indices.

Abstract

ISO 105-J02:1997 defines an objective, instrumental procedure for assessing how white a textile appears to an average observer. The method uses tristimulus reflectance measurements from a spectrophotometer or colourimeter, applies CIE-recommended formulae to calculate a whiteness index and a tint value, and gives guidance on instrument conditions, sample handling and interpretation of results. Corrigendum 1 (1998) provides technical corrections to the original 1997 text.

General information

• Status: Published (confirmed by ISO review; current edition with Corrigendum 1:1998).
• Publication date: 15 December 1997 (Corrigendum 1: 1998).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 59.080.01 (Textiles in general — colour fastness tests).
• Edition / version: Edition 2 (1997) including Corrigendum 1 (1998).
• Number of pages: 8 (published technical document length).

Scope

This standard specifies an instrumental method intended to quantify the relative whiteness and tint of commercially “white” textile specimens, including fabrics with fluorescent whitening agents (FWAs). It is intended for comparative measurements on specimens of the same type, measured under the same conditions, and is not intended to provide absolute colourimetric characterization across different textile types or instruments.

Key topics and requirements

• Definition and purpose of the whiteness index and tint value as indicators of perceived whiteness and hue shift.
• Instrumentation: use of spectrophotometers or tristimulus colorimeters capable of measuring reflectance over the visible range and approximating CIE illuminants/observers recommended by the standard.
• Measurement conditions: standard illuminant and observer specifications (CIE-based), aperture, geometry and sample presentation to ensure repeatability.
• Handling of fluorescent whitening agents (FWAs): guidance for detecting FWA presence (UV inspection) and recommendations for appropriate instrument conditions to account for fluorescence where possible.
• Calculation formulae: application of CIE-recommended equations to compute a whiteness index and a tint value from measured tristimulus values (the standard gives the specific formulae and variants for different illuminants/observers).
• Limitations and interpretation: results are relative and comparisons should be restricted to like-for-like textile types measured on the same instrument or under tightly controlled conditions.
• Sample preparation and repeatability: recommendations for specimen conditioning, number of repeats and reporting of measurement conditions to support traceability and comparison.

Typical use and users

ISO 105-J02 is typically used in textile quality control, finishing and bleaching process monitoring, acceptance testing between suppliers and buyers for “commercial white” goods, R&D assessing whitening or blueing treatments, and by calibration laboratories and instrument manufacturers implementing whiteness indices. Typical users include textile technologists, QC laboratories, dye and finishing specialists, colour scientists and test-house personnel.

Related standards

ISO 105-J02 is one part of the ISO 105 series on tests for colour fastness. Related parts include other J-series parts (for instrumental/colourimetric procedures) and adjacent ISO 105 parts covering specific fastness tests (A–M series). The ISO text is adopted in regional standards such as EN ISO 105-J02 (1999) which incorporates the 1997 edition and its 1998 corrigendum. Users often consult CIE recommendations for colourimetric definitions and other ISO 105 parts for complementary colour-fastness test methods.

Keywords

whiteness, tint, textile whiteness, colour fastness, instrumental assessment, spectrophotometer, colourimeter, CIE, fluorescent whitening agents, ISO 105, reflectance measurement, whiteness index

FAQ

Q: What is this standard?

A: ISO 105-J02:1997 (with Corrigendum 1:1998) is an ISO method for instrumental assessment of the relative whiteness and tint of textiles using standardised reflectance measurements and CIE-based calculation formulae.

Q: What does it cover?

A: It covers instrumentation and measurement conditions, calculation of whiteness and tint indices from tristimulus values, guidance for samples containing fluorescent whitening agents, and limitations on comparative use (results are relative and intended for like-for-like comparisons).

Q: Who typically uses it?

A: Textile manufacturers and finishers, quality control and test laboratories, R&D groups working on whitening/bleaching and FWAs, instrument manufacturers, and standards or calibration laboratories.

Q: Is it current or superseded?

A: The 1997 second edition with Corrigendum 1 (1998) remains the published edition for ISO 105-J02; national/regional adoptions (for example EN ISO 105-J02:1999) reference this text. Users should check with their national standards body or ISO for any later revisions or confirmation status before citing for regulatory or contractual purposes.

Q: Is it part of a series?

A: Yes — ISO 105-J02 is part of the ISO 105 series (Tests for colour fastness), which contains multiple parts addressing different test methods and instrumental assessments for textile colour fastness.

Q: What are the key keywords?

A: Whiteness, tint, reflectance, spectrophotometer, colourimeter, CIE, fluorescent whitening agents (FWAs), whiteness index, ISO 105.