HY9020 Series Color Assessment Cabinet is used for the assessment of color fastness in textile, printing and dyeing, printing, paper, paint and other industries, as well as the degree of metamerism of the same color. This instrument complies with the following international and industry standards: ASTM D1630. Color assessment cabinets with different light sources (D65, TL84, CWF, F, UV, etc.) can be selected, which can detect metamerism. It meets or exceeds major international standards for visual color evaluation, including ASTM D1729, ISO 3664, DIN, ANSI and BSI. It is easy to operate by using individual switches for each light source. An elapsed time meter is used for tracking optimal lamp replacement. Technical Specification Application Power: D65: 6500K International standard artificial daylight, 18W/36W TL84: 4000K European and Japanese shop light source, 18W/36W CWF: 4150K USA shop light source, 18W/36W F: 2700K Yellow light source, 40W A: 2700K Yellow light source, 60W UV: / Ultraviolet lamp, 18W/36W U30: 3000K Other US shop light source, 18W/36W