Cobalt Blue Medium 4oz

Cobalt Blue Medium Pigment Dispersion
Pigment Class: Cobalt Aluminate Blue Spinel
Color Index Number: PB28
Opacity: M
Tinting Strength: 2
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=Poor, 2=Fair, 3=Good, 4=Very Good, 5=Excellent
Weatherfastness: F=Full Tone, M=Medium Tone, L=Light Tone. “No” indicates pigments the should not be used outdoors.