The purpose of this test is to determine if the leather placed in contact with a white plastic material, may give rise to migration. The point is to verify if the leather can be safely used to produce an item in which have to coexist different materials (fabrics, plastic, etc), without any color transfer. By their chemical nature, INK FOR LEATHER colors ensure excellent results to PVC migration test, whereas this is not guaranteed by dyestuffs.
In the picture some test results for color fastness