ISO-5631-1 Complete Document History
Paper and board - Determination of colour by diffuse reflectance - Part 1: Indoor daylight conditions (C/2°)

Complete Current Edition:
   3RD EDITION - Part 1: Indoor daylight conditions (C/2°) - July 1, 2022

Obsolete Revision Information:
   2ND EDITION - Part 1: Indoor daylight conditions (C/2 degrees) - Nov. 1, 2015
   1ST EDITION - COLOUR BY DIFFUSE REFLECTANCE - Oct. 15, 2009