M Graham Artists Gouache Paint Open Stock

Composition and Permanence: The colour index name is established and published by the American Association of Textile Chemists and Colourists and The Society of Dyers and Colourists. The colour index name is a generic category and does not refer to a specific pigment. While it enables the artist to form a general idea of opacity, transparency and lightfastness, it does not provide definitive information for a pigment in a particular colour space. Many pigment grades are available from several manufacturers with a wide range of physical attributes.

Chemical Name: The chemical name is a brief, commonly used generic type designation of the pigment types composition. In conjunction with the colour index name, the chemical name can broaden the artist's understanding of the source and nature of the pigment used.

Permanence: The permanence of a colour is a measure of the lightfastness of the pigment when dispersed in a vehicle and subjected to conditions which emulate the exposure usually given to a fine arts object. Such ratings are generally considered vehicle or media-dependent and can vary between media — thus, pigment, which is suitably lightfast for oil colour, might not be lightfast in watercolour. Our ratings utilize a combination of historical data, accelerated testing and data from pigment manufacturers to establish one of the toughest standards among artists and colour makers today.

Transparency and Opacity: Each of our colours has been provided with a designation indicating relative degrees of transparency to opacity. Please consider these as a guideline because any thin film application, while not necessarily transparent, can be interpreted by the view as such.

• Artist-quality gouache paint made with pure blackberry honey
• Free for chalk and opacifying adulterants
• Reflective matte finish provides a vehicle to be used alone or in mixed media combination with watercolour
• High pigment loads of deep, dense colour
• Conforms to ASTM D4236.
• Tube Dimensions: 1.1 x 0.8 x 3 inches (2.8 x 1.9 x 7.6 cm) - 68 g