BS EN 13523-3:2024 Coil Coated Metals - Test Methods for Colour Difference and Metamerism

Standard Number: BS EN 13523-3:2024

Pages: 14

Released: 2024-05-09

ISBN: 978 0 539 28016 6

Name: Coil Coated Metals. Test Methods Colour Difference and Metamerism. Instrumental Comparison

Status: Standard

Overview

Introducing the BS EN 13523-3:2024, the definitive standard for testing the colour difference and metamerism of coil coated metals. This comprehensive guide provides the essential methodologies and instrumental comparisons necessary for ensuring the highest quality and consistency in your coil coated metal products.

Why Choose BS EN 13523-3:2024?

In the competitive world of coil coated metals, maintaining consistent colour quality is paramount. The BS EN 13523-3:2024 standard is designed to help manufacturers, quality control professionals, and researchers achieve precise and reliable results in colour difference and metamerism testing. Here’s why this standard is indispensable:

• Comprehensive Methodologies: Detailed procedures for accurately measuring colour differences and metamerism.
• Instrumental Comparison: Guidelines for using advanced instruments to ensure consistent and reproducible results.
• Quality Assurance: Helps in maintaining the highest standards of product quality and customer satisfaction.
• Industry Compliance: Ensures your products meet the latest industry standards and regulations.

Key Features

The BS EN 13523-3:2024 standard is packed with features that make it an essential tool for anyone involved in the production or quality control of coil coated metals:

• Detailed Test Methods: Step-by-step instructions for conducting colour difference and metamerism tests.
• Instrumental Guidelines: Comprehensive guidelines for using various instruments to achieve accurate results.
• Quality Control: Techniques for ensuring consistent colour quality across different batches of coil coated metals.
• Metamerism Analysis: Methods for analyzing and mitigating metamerism issues, ensuring colour consistency under different lighting conditions.
• Updated Standards: Reflects the latest advancements and best practices in the industry.

Who Should Use This Standard?

The BS EN 13523-3:2024 standard is ideal for a wide range of professionals and organizations, including:

• Manufacturers: Ensure your coil coated metals meet the highest quality standards.
• Quality Control Professionals: Implement rigorous testing procedures to maintain product consistency.
• Researchers: Access the latest methodologies for studying colour difference and metamerism.
• Regulatory Bodies: Ensure compliance with industry standards and regulations.

Benefits of Using BS EN 13523-3:2024

Adopting the BS EN 13523-3:2024 standard offers numerous benefits, including:

• Enhanced Product Quality: Achieve consistent and high-quality colour finishes on your coil coated metals.
• Customer Satisfaction: Deliver products that meet or exceed customer expectations.
• Regulatory Compliance: Stay compliant with the latest industry standards and regulations.
• Competitive Advantage: Stand out in the market with superior product quality and reliability.
• Cost Efficiency: Reduce waste and rework by ensuring consistent colour quality from the start.

Table of Contents

The BS EN 13523-3:2024 standard is organized into several key sections, each providing valuable information and guidelines:

1. Introduction: Overview of the standard and its importance in the industry.
2. Scope: Defines the scope and applicability of the standard.
3. Normative References: Lists the essential references and related standards.
4. Terms and Definitions: Provides clear definitions of key terms used in the standard.
5. Test Methods: Detailed procedures for conducting colour difference and metamerism tests.
6. Instrumental Comparison: Guidelines for using various instruments to achieve accurate results.
7. Quality Control: Techniques for ensuring consistent colour quality.
8. Metamerism Analysis: Methods for analyzing and mitigating metamerism issues.
9. Annexes: Additional information and resources to support the implementation of the standard.

Conclusion

The BS EN 13523-3:2024 standard is an essential resource for anyone involved in the production, quality control, or research of coil coated metals. By providing comprehensive methodologies and guidelines for testing colour difference and metamerism, this standard ensures that your products meet the highest quality standards and customer expectations. Invest in the BS EN 13523-3:2024 standard today and take your coil coated metal products to the next level of excellence.

BS EN 13523-3:2024

This standard BS EN 13523-3:2024 Coil coated metals. Test methods is classified in these ICS categories:

• 17.180.20 Colours and measurement of light
• 25.220.60 Organic coatings

This document specifies procedures for determining the instrumental colour difference (CIELAB or ) of an organic coating on a metallic substrate compared to another one used as a reference (usually called reference) and the metamerism depending on the illuminant. When two colour specimens have identical spectral reflectance curves, they are matching under any illuminant irrespective of its spectral characteristics. This is termed a “spectral match”. It is also possible for two colour specimens having different spectral reflectance curves to match visually under a given light source but not to match under another light source with different spectral characteristics; such matches are termed "metameric". One quantitative description of metamerism is the so-called "metamerism index". Information on the metamerism index is of limited value where ΔE (instrumental colour difference for a given illuminant) is > 0,5. The metamerism index is not suited for determining the absolute colour difference or colour consistency of a given specimen at change of illuminant. The colour difference under the reference illuminant is to be measured in colour coordinates L*, a* and b*. Excluded from this method are organic coatings producing fluorescence and/or which are multicoloured, pearlescent or metallic. Establishing a reference as well as the magnitude of an acceptable colour difference are not covered by this method. Two methods are given in this document: a) instrumental colour difference measurement using a tristimulus colourimeter; b) instrumental colour difference measurement using a spectrophotometer or equivalent. It is advised that care is taken when measuring e.g. - textured surfaces; - fluorescent coatings; - metameric coatings; - multi-coloured, pearlescent, metallic or special colour effect coatings.