GB 250-1995/ISO 105/A02-1993 evaluation of color with grey scale

Grey scalefor assessing change in colou

GB 250-1995/ISO 105/A02-1993

Description:
Gray card for international level 5 in this series 9 specifications type. Gray card gray full ISO, AATCC, colorimetric data provided by the GB, made from carefully color scheme. Colorimetric data of each document are imported with high accuracy spectrophotometer, with chromatic passing reference to the correction of the China Academy of Sciences, ensure its grayscale data with the international agreement.
Field of application: as a result of the international standard ISO, United States standard AATCC and colorimetric data provided by the China national standard GB standard to calibrate the grey card, so use the gray card to determine colour fastness level, consistent with the international. The gray card applies to GB, ISO, AATCC, DIN, BS, JIS, EN textile color fastness ratings in standards. Caution: keep the gray card clean. Should always check the availability of finger marks on a gray card. If mark had to interfere rating, you must replace the gray card. Try to avoid mechanical damage arising from the touch. If you interfere with mechanical damages on the rating should be replaced. Gray card after use, to be put inside a set of keywords: ISO Gray card, ISO color gray card, ISO staining Gray card, AATCC Gray card, five of nine Gray card, United States standard of AATCC Gray card, textile color fastness test Gray card, AATCC color gray card, faded color test Gray card, international standard ISO Gray card.