Ratings
| Lightfastness | III | Fair (Impermanent)
Blue wool 4-5. The pigment will remain unchanged for 15 to 50 years with proper mounting and display. ("May be satisfactory when used full strength or with extra protection from exposure to light.") |
|---|---|---|
| Transparency | T | Transparent
Transparent |
| Staining | 4 | High-Staining
Difficult to lift once dry. |
| Granulation | N | Non-Granulating
Pigment particles are smooth and even. |