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 United States under the standard AATCC chromatic data 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.
Precautions for use:
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 is used up, it is put inside a set of