Fastness Grades | Shade change | Comments | Staining |
Grade-5 | No change | Excellent | No staining |
Grade-4 | Slight loss in depth | Good | Very slight staining |
Grade-3 | Appreciable loss | Fair | Moderate staining |
Grade-2 | Significant loss | Poor | Significant staining |
Grade-1 | Great loss in depth | Very poor | Deep staining |