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ISO 9001:2015 & ISO 14001:2015 Certified

ASTM D1729-22

The core standard for the visual appraisal of opaque materials (like plastics, paints, textiles, and food). It specifies mandatory light booth requirements, including target light intensities (lux ranges based on how light or dark the sample is), even illumination, and the exact neutral gray wall coloring (Munsell N7) inside the box.