Grumbacher Pre-Tested Oil - 37 ml. Tubes.
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90 colors, 1.25 fluid ounce (37 ml) tubes. Whites and Ivory Black also available in 5.07 fluid ounce (150 ml) tubes. Made in the U.S.A.

USING OIL COLORS

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PAINTING "FAT OVER LEAN"

Multi-layer oil painting techniques in which paint is fluidly applied require that "each layer of an oil painting must contain more oil than the layer underneath". This allows for proper drying and adhesion between paint layers and deters cracking of the painting when it ages.

To ensure a "fat over lean" ration, pour a quantity of oil or painting medium into a container and dilute with a larger amount of solvent. Mark the level of the mixture on the container. Fill the palette cup from this container. When a layer of painting is completed, allow it to dry. Then refill the container up to the mark with straight oil or painting medium. Repeat each time a layer is completed, adding oil or medium up to the mark on the container for each session. This will automatically increase the ratio of oil in each layer.

Wet-in-wet or alla prima painting techniques, in which paintings are completed in one or two sessions without allowing layers to dry, do not require adherence to the "fat over lean" rule. Such paintings effectively form only one paint layer, so the rule does not apply.

All Pre-Tested Oil Colors are available in 1.25 fl. oz. (37ml) tubes. Several colors are also available in 5.07 f. oz. (150 ml) tubes.

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Color Chart