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API STD 668: Brazed Aluminum Plate-fin Heat Exchangers for General Refinery Services

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ISO 18314:2022

ISO 18314:2022 Analytical colorimetry – Part 5: Procedure for colorimetric determination of colour differences of object colours according to equidistant colour spaces

CDN $173.00

SKU: 435b643f939b Categories: ,

Description

This document specifies the procedure and test report for determining small colour differences of object colours according to equidistant colour spaces. Three suggestions for metrics for the quantitative determination of small colour differences (∆E < 5) of non-luminous colours are given in Annexes A, B and C. These examples are related to the three colour space models: OSA-UCS modified by Oleari et al., DIN99o and CAM16-UCS (uniform colour space).

This document is applicable for the assessment of pigments, dyestuff and extenders in the field of coatings, plastic and prints only that are evaluated in pairs for colour conformity, and which have small perceptible colour differences.

Edition

1

Published Date

2022-11-25

Status

PUBLISHED

Pages

16

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

This document specifies the procedure and test report for determining small colour differences of object colours according to equidistant colour spaces. Three suggestions for metrics for the quantitative determination of small colour differences (∆E < 5) of non-luminous colours are given in Annexes A, B and C. These examples are related to the three colour space models: OSA-UCS modified by Oleari et al., DIN99o and CAM16-UCS (uniform colour space).

This document is applicable for the assessment of pigments, dyestuff and extenders in the field of coatings, plastic and prints only that are evaluated in pairs for colour conformity, and which have small perceptible colour differences.

Previous Editions

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