Description
Designers Gouache is a light purple toner with a series number of 2 and a chemical description of PTMA. The colour index name is PV 3, and the colour index number is 42535. The permanence rating is B, and the ASTM lightfastness rating is V. The transparency/opacity is O.
Colour number/code: 360
Series number: 2
Chemical Description: PTMA toner
Colour index name: PV 3, PV 2
Colour index number: 42535, 45175
Permanence rating: B
ASTM Lightfastness Rating: V
Transparency/
Opacity: O
Good quality gouache colour is a combination of pigment and gum arabic. Gum arabic is the binder that holds the pigment, giving it that perfect creamy 'flowing' consistency. (NB some cheaper brands may have chalk added to the pigment which in turn effects the 'flow and the brilliance of colour'). As a result of the high level of pigmentation Winsor & Newton Designers Gouache dries to a matt finish. This reduces the reflection when photographing the work.
Every colour within the range has an individual formulation to take advantage of each and every pigment characteristic and ensure tube stability.
One of the natural attributes of gum arabic - the binder used in Designers Gouache is that it is quick drying. This faster drying allows quick working techniques and preliminary sketching to be done. Also as with water colour, work can be finished quickly and as a result travelling with work is made much easier.
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