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ASTM D1729 Standard Test Method For Accurate Color Matching


The ASTM D1729 standard test method used to improve the uniformity of products and precise color matching. The color matching observations are done visually, and various types of color measuring instruments are available for the same. The standard test method is important for color matching issues and is recommended for color appraisal such as selecting or choosing a color. The practice has extensive use in different industries to choose the color, inspect materials, indicate color reproducibility, and to observe the finished products.

The visual assessment is crucial to check the material used in the product and to compare with the color standard.

  • The observers practice is based on the assumption that the observer has superior color vision. The observer is skilled and experienced in perceiving and categorizing the differences in color. The result ultimately depends on the observer. There are some guidelines for selection, appraisal, and training of the observers.
  • Illumination – the International Commission on Illumination (CIE) recommends simulated average daylight, D50 for applications such as photography or color printing. This is specified in ISO 3364-2009.

The test method includes the equipment and processes for visual assessment to check the color differences of opaque materials. The metallic and paints require illumination that simulates the direct sunlight to observe the actual sparkle of such materials. However, this practice does not guarantee to simulate such viewing conditions.

The Color Matching Cabinet for Checking the Color Quality & Consistency

Presto’s Color Matching Cabinet simulated the standardized environment for visual assessment of color. The equipment has five light sources as per CIE international standards – D65, TFL light, TL84, UVB light, and CWF light.