EN ISO 3668:2020 PDF

Paints and varnishes - Visual comparison of colour of paints (ISO 3668:2017)

Title (English):

EN ISO 3668:2020

Paints and varnishes - Visual comparison of colour of paints (ISO 3668:2017)

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 15
Publication date:: February 12, 2020
Edition:: CEN EN 3668 edition 2 version 1
ICS:: 87.040

Document language:

enru

Delivery time:1–7 days

Price:60 €

Description (English):

ISO 3668:2017 specifies a method for the visual comparison of the colour of films of paints or related products against a standard (either a reference standard or a freshly prepared standard) using artificial light sources in a standard booth. It is not applicable to coatings containing special-effect pigments, e.g. metallic, without previous agreement on all details of illuminating and viewing conditions

Technical details

Technical committee: CEN/TC 139 - Paints and varnishes
SKU: EN ISO 3668:2020

Abstract

Overview

EN ISO 3668:2020 (ISO 3668:2017) - "Paints and varnishes - Visual comparison of colour of paints" specifies a standardized method for visually comparing the colour of paint films against a standard using controlled artificial illumination in a colour‑matching booth. The standard is intended for routine colour matching and referee assessments and excludes coatings containing special‑effect pigments (e.g., metallic) unless all illuminating and viewing conditions are agreed in advance.

Key topics and requirements

Scope and principle: Visual comparison of paint films under specified illumination and viewing conditions; includes assessment of hue, chroma and lightness components and metamerism.
Colour‑matching booth: Use an enclosed booth that excludes external light and provides artificial light sources approximating CIE illuminant D65, CIE illuminant A, or CIE illuminant FL 11. Light sources outside these distributions require agreement between parties.
Illumination level: Recommended illuminance at the viewing position is 1 000 lx to 4 000 lx (higher values desirable for dark colours).
Surroundings: Interior should be matt neutral grey (L* ≈ 45–55; a* and b*

Related standards

Mentioned in the description and other EN standards

Overview

Key topics and requirements

Scope and principle: Visual comparison of paint films under specified illumination and viewing conditions; includes assessment of hue, chroma and lightness components and metamerism.
Colour‑matching booth: Use an enclosed booth that excludes external light and provides artificial light sources approximating CIE illuminant D65, CIE illuminant A, or CIE illuminant FL 11. Light sources outside these distributions require agreement between parties.
Illumination level: Recommended illuminance at the viewing position is 1 000 lx to 4 000 lx (higher values desirable for dark colours).
Surroundings: Interior should be matt neutral grey (L* ≈ 45–55; a* and b*

EN ISO 3668:2020 PDF

Technical details

Abstract

Overview

Key topics and requirements

Related standards

Abstract

Overview

Key topics and requirements

Related standards

Paints and varnishes — Visual comparison of colour of paints

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