1 Scope
2 Normative references
3 Terms and definitions
4 Test conditions
  4.1 General
  4.2 Test room
  4.3 Working area
  4.4 Lighting
      4.4.1 General
      4.4.2 Natural daylight illumination
      4.4.3 Artificial daylight illumination
      4.4.4 Other artificial sources
  4.5 Illuminance
  4.6 Geometric conditions for illuminating and viewing
      4.6.1 Opaque or translucent samples
      4.6.2 Transparent or clear liquids
  4.7 Assessors
      4.7.1 Recruitment and selection of assessors
      4.7.2 Training
      4.7.3 Sensory adaptation and fatigue
5 Test method
  5.1 Principle
  5.2 Reference materials (colour standards)
  5.3 Apparatus and equipment
      5.3.1 Containers or dishes, with coverglasses, for
            powder samples
      5.3.2 Holders, with a rectangular opening in the bottom,
            for clear liquids
      5.3.3 Vials, test tubes and flasks, with flat bottoms,
            in clear glass
      5.3.4 Small neutral grey screen, with rectangular opening
  5.4 Test samples
  5.5 Procedure
      5.5.1 Preparation of samples
            5.5.1.1 Dry powdered samples (particle size less than
                    1 mm)
            5.5.1.2 Opaque solid samples
            5.5.1.3 Liquid samples
      5.5.2 Evaluation of colour by comparison
            5.5.2.1 General
            5.5.2.2 Opaque powder samples
            5.5.2.3 Opaque solids and flat matt surface samples
            5.5.2.4 Opaque solids with glossy irregular surface
            5.5.2.5 Opaque solids with glossy regular surface
            5.5.2.6 Opaque samples with non-uniform colour
            5.5.2.7 Opaque, translucent and cloudy liquid samples
            5.5.2.8 Clear liquid samples
6 Expression of results
7 Test report
Annex A (Informative) - Metameric matches
Annex B (Normative) - Selected definitions
Annex C (Informative)
Annex D (Informative) - Complementary information
Bibliography