1.LIGHT RESISTANCE:
According to the testing standard,shows in 1-8 grade.And the grade 8 sows the best one,grade 1 shows the worst one.
2.WEATHER RESISTANCE:
Expose 12 months in the natural exposure field According to the testing standard,it shows in 1-5 grade.And the grade 5 shows the best one,grade 1 shows the worst one.
3.HEAT RESISTANCE:
The tested pigment will not have an obvious color change under this temperature degree.(This data is just for reference which is changed in the affection of the exact resin system and the bake time).
4.ACID/ALKALI RESISTANCE:
Make the paint coloring piece,immerse in the 5% NaOH or 5% HCL solvent,contrast the shade difference after 30 minutes at the normol tem perature to the standard,it shows in 5 grade,and the grade 5 is the best one,grade 1 is the worst one.
5.OIL ABSORPTION:
Tested in the spatula way,according to the standard ,it is showed by the quanlity of the flax oil absorbed by 100gms tested pigment.