Product Description:
The gray sample card for assessing staining is not only suitable for detecting the degree of staining of the fixed lining fabric, but also for determining the degree of staining of any white matter.
Specifications:
Function: Textile color fastness test
Color: 5 levels, 9 gears
Size: 25*13cm
Precautions for Use:
1. Keep the gray card clean.
2. Always check the gray card for fingerprints.
3. If the imprint has been found to interfere with the rating, the gray card must be replaced.
4. Try to avoid mechanical damage caused by touch.
5. If mechanical damage interferes with the rating, it should be replaced.
6. After the gray card is used up, put it into the sleeve.