GSO ISO/CIE 11664-2:2025

ISO/CIE 11664-2:2022
Gulf Standard   Current Edition · Approved on 14 October 2025

Colorimetry — Part 2: CIE standard illuminants

GSO ISO/CIE 11664-2:2025 Files

English 32 Pages
Current Edition Reference Language
OMR 74.7

GSO ISO/CIE 11664-2:2025 Scope

This document defines three CIE standard illuminants for use in colorimetry: CIE standard illuminant A for the representation of typical tungsten-filament lighting, CIE standard illuminant D65 for the representation of average daylight having a correlated colour temperature of approximately 6 500 K and CIE standard illuminant D50 for the representation of daylight with a correlated colour temperature of approximately 5 000 K. Values of the relative spectral power distribution of the three illuminants are included in this document.

Best Sellers From Metrology Sector

OS GSO OIML R87:2021
OIML R87:2016 
Omani Standard
Quantity of product in prepackages
GSO OIML R87:2021
OIML R87:2016 
Gulf Standard
Quantity of product in prepackages
GSO OIML R79:2021
OIML R79:2015 
Gulf Standard
Labeling requirements for prepackages
OS GSO OIML R79:2021
OIML R79:2015 
Omani Standard
Labeling requirements for prepackages

Recently Published from Metrology Sector

OS GSO ISO 8655-8:2026
ISO 8655-8:2022 
Omani Standard
Piston-operated volumetric apparatus — Part 8: Photometric reference measurement procedure for the determination of volume
OS GSO ISO 4360:2026
ISO 4360:2020 
Omani Standard
Hydrometry — Open channel flow measurement using triangular profile weirs
OS GSO ISO/TR 9464:2026
ISO/TR 9464:2023 
Omani Standard
Guidelines for the use of ISO 5167:2022
OS GSO ISO 5059-1:2026
ISO 5059-1:2025 
Omani Standard
Geometrical product specifications (GPS) — Dimensional measuring equipment — Part 1: Design and metrological characteristics of two-point inside micrometers