GB/T 16990-1997

This standard specifies the instrumental method for determining the 1/1 standard depth of colour in textiles, which is used to establish a consistent reference point for colour depth in colour fastness testing. It is applied in textile laboratories and quality control settings to ensure that colour fastness assessments, such as washing or light exposure, are conducted on samples with a uniform depth of shade. The standard is essential for textile manufacturers and testing institutions to achieve reproducible and comparable results across different dye batches and materials.