Ultramarine Violet Periwinkle 2 oz Dry by Volume

Violet | Class=Inorganic | Dry Pigment
Ultramarine Violet Pigment
Pigment Class: Inorganic
Color Index Number: PV15
Opacity: L
Tinting Strength: 1
Alkali Resistance: 5
Blue Wool Scale (Lightfastness): F:8 M:8 L:8
Weatherfastness: F:No M:No L:No

Key:
Opacity: H=High, M=Medium, L=Low, T=Transparent, VT=Very Transparent
Tinting Strength: 1=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent
Alkali Resistance: 1=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent (Alkali Resistant does not mean “lime safe”)
Blue Wool Scale (Industrial system to measure lightfastness): F=Full Tone, M=Medium Tone, L=Light Tone. 1=Very Poor, 2=Poor, 3=Poor/Fair 4=Fair 5=Good 6=Very Good 7=Excellent 8 =Outstanding
Weatherfastness: F=Full Tone, M=Medium Tone, L=Light Tone. “No” indicates pigments that should not be used outdoors.