Burnt Umber Xtra Dark 4oz

Burnt Umber Xtra Dark Pigment Dispersion
Pigment Class: Earth
Color Index Number: PBr7
Opacity: H
Tinting Strength: 1
Alkali Resistance: 5
Blue Wool Scale (Lightfastness): F: 8 M:8 L:8
Weatherfastness: F:Yes M:Yes L:Yes

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 the should not be used outdoors.