DIN 5033 Color Measurement

The “DIN 5033 Color measurement” standard, developed by the German Institute for Standardization (DIN), consists of several sections published under the same title. Namely,

• The standard "DIN 5033-1 Part 1: Basic concepts of colorimetry" is used in industrial areas that deal with the definition of subtractive colors and luminous colors. Color subtraction is a useful way of determining the final color appearance of an object if the color of the light and the pigments are known. Using the complementary color scheme, the colors of light that will be absorbed by a given material can be determined. This standard defines the basic concepts of colorimetry. It is used in all industrial application areas that deal with the definition of body colors and luminous colors on a metric basis.
• The standard “DIN 5033-2 Part 2: Standard colorimetric systems” describes the standard color value systems of 1931 degrees and 1964 degrees with the colorimetric standard observers CIE 2 and CIE 10. This standard contains standard spectral value functions for both systems. CIE 1931 defines the relationship between the visible spectrum and the visual perception of specific colors by human color vision. CIE color spaces are mathematical models that attempt to predict the perception of unique color tones. These color spaces are the fundamental tools that provide the basis for color measurement for industry, including inks, paints, lighting and color imaging.
• In the standard “DIN 5033-3 Part 3: Colorimetric measurements”, various color values ​​are described:
  • Standard color values ​​and color value components for the 2-degree standard color system
  • Standard color values ​​and color value components for the 10-degree standard color system
  • Helmholtz color values ​​(this theory says that the cones are sensitive to three different colors, green, blue and red, when combined the eyes can distinguish between millions of colors)
  • CIE 1976 color spaces (The CIE 1976 color difference formula was the first to relate a measured color difference to a known set of CIELAB coordinates).
  • Colour values ​​according to the DIN colour system.
• The standard “DIN 5033-4 Part 4: Spectral method” covers the spectral method of color measurement. After explaining the basic principles of this method, a detailed explanation of the spectral measurement and subsequent calculations is given. Spectral color corresponds to the wavelengths of visible light (the root of all colors). The root of all colors comes from light. Sunlight, artificial light (all visible light) consist of different wavelengths and each wavelength corresponds to a different color. This is the spectral color.
• The standard “DIN 5033-5 Part 5: Colour measurement by visual colour matching” describes the requirements for visual colour matching. The factors examined in visual colour matching include: light source, imaging geometry, sample size, age, gender and colour vision defects of the observer and the consistency of the observers. In contrast, the factors in instrumental colour matching are the light source, the choice of 2 degree or 10 degree standard observer data, the effect of imaging geometry, textile structure, gloss or specular reflection, dichroism, fluorescence, metamerism of the sample, the choice of colour difference formulas and the uniformity of the visually uniform colour space.
• The standard “DIN 5033-6 Part 6: Triple stimulus method” describes a system for visually matching a color to the three basic colors (red, green and blue) under standard conditions. The three results are expressed as X, Y and Z respectively and are called triple stimulus values.
• The standard “DIN 5033-7 Part 7: Measurement conditions for object colours” describes the measurement conditions for object colours. Colour measurements require a wavelength range between 380 nm and 780 nm, which is equivalent to the wavelengths that the human eye can perceive. Colour measurements can be made by calculations based on spectral reflectance measurements by a UV-VIS spectrophotometer in this wavelength range.
• The standard “DIN 5033-8 Part 8: Measurement conditions for light sources” describes the measurement conditions needed to measure the amount of light in an area or on a specific work surface.
• The standard "DIN 5033-9 Part 9: Reflectance for calibration in colorimetry and photometry" describes the requirements for reflectance standards and materials for their processing. This standard applies to colorimeters and photometers used for measuring reflectance.
• The standard “DIN 5033-10 Part 10: Calibration in colour measurement and photometry using black standards” describes the materials for reflectance black standards and the requirements for their processing and use. This standard applies to colorimeters and photometers for reflectance measurement. For example, the black glass standard is used as a reference for measuring surfaces with low specular reflectance values, such as thin-film coatings, anti-reflective coatings, blocking filters and substrates. The approximate light reflectance value of an individual colour indicates the ratio of the amount of light reflected by a surface to the amount of light falling on that surface. Black has a light reflectance value of 0 percent and absorbs all light.

Our organization has a strong staff that closely follows the developments in the world in the field of science and technology and constantly improves itself. Among the numerous test, measurement, analysis and evaluation studies provided for businesses in various sectors, there are also test services in accordance with the standard "DIN 6175 Color tolerances for automotive coatings - Solid and effect coatings".