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GRISAILLES - SILVER YELLOWS - JEAN COUSIN
Made in collaboration with the Research Laboratory of the Historic Monument Department of French Government.

The grisaille have the same basic composition as in the Middle Ages.

Correct application of theses paints will garantee your works of art last as long as the world famous stained glass windows.
Characteristics of Grisailles

COMPOSITION :
"Rocaille" (the melting agent) 5 SiO2 4 PbO + metallic oxyde colouring.
Note: grisailles can be mixed together
APPLICATION :
Distilled water and gum arabic or any other medium used in artist studios.
Vinegar is not advised : if you do use it, you should make test samples first.
FIRING :
Minimum 620°C to 750°C or more, depending on the color.
For best results, leave it an hour at firing temperature.
ASPECT :
Grisaille is a paint made from mineral pigments in a vitreous mass (melting agent) after firing, it has a matt or satin appearance, or gloss if fired at high temperature.
According to its use, you can get opaque effects or a transparent effect.
Note: grisailles are tinted in transparence; the transmited light is not colored.

Characteristics of Silver Yellows
COMPOSITION :
Silver chloride and sulphide in red ochre.
APPLICATION :
Distilled water; the red ochre is removed after firing.
FIRING :
580°C and hotter, depending on the result desired.
ASPECT :
From light yellow to amber, depending on the products used and the glass it is used on. Note: Silver stains tint the glass; the transmited light is coloured.
Characteristics of Carnation Jean Cousin

COMPOSITION :
Single, iron-based particles, fixed in gum arabic.
APPLICATION :
Distilled water; any exess can be removed after firing.
FIRING :
620°C minimum, 680°C maximum.
ASPECT :
Limpid colour from brown-yellow to red.
Note: the transmited light through this paint is coloured.
Carnation do not colour on the tin face of the float glass.

Characteristics of Blue Enamel
COMPOSITION :
Glass of SI O2, H3BO3, ZnO, Pb3O4 tinted with 10% de Co3O4
APPLICATION :
Distilled water with medium type
FIRING :
620°C minimum, 850°C maximum.
ASPECT :
Limpid blue colour
Note: the light which transmitted is tinted
Characteristics of Red of Copper

COMPOSITION :
Copper sulphide in red ochre
APPLICATION :
Distilled water ; the red ochre is removed after firing.Float glass is the most suitable for this product."   
FIRING :
580°C or hotter , depending on the desired result.
ASPECT :
Light to dark red depending on the glass
Note : red of copper tints the glass; the light transmitted is coloured.    

Paints

Safety data sheets

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