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Oil Mediums

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A specially formulated quick-drying, clear, colorless, colloidal painting medium for artists' oil colors. Zec maintains the consistency and hue of the color and holds the desired texture. Based on the average applications of color, paintings were found to be dry to the touch in 4 to 6 hours.
Grumbacher Zec
Opaque oil colors properly mixed with gel become transparent but retain all the characteristics of hue, consistency and texture of the tube color. Gel is an artists' oil color medium that is colorless and compatible with all oil colors. Gel has the same consistency as oil colors fresh from the tube. Ideal for glazing techniques.
Grumbacher Gel Transparentizer
A very light colored oil that comes from the seed of the White Poppy. It has less tendency to yellow than linseed oil, but dries more slowly. The paint film formed by poppyseed oil is not as hard as linseed oil, and may crack. It is best used in Alla Prima, wet-on-wet painting, and should not be overpainted.
Grumbacher Poppyseed Oil
Stand oil is a linseed oil that has been heated in the absence of oxygen, causing thickening. The resulting oil remains light in color, and is more resistant to yellowing. Stand oil wets the paint better than linseed oil and helps it flow, or makes paint "longer." It produces a glossy, enamel like paint that is easy to control for fine detail, and a smooth finish.
Grumbacher Stand Oil
An oil modified alkyd resin in the form of a thixotropic gel. Used as a thinning medium for oil colors, which increases the drying rate. Suitable for glazing and detail work. Produces rich, transparent, luminous colors and is non-yellowing.
Grumbacher Alkyd Painting Medium
A pure, refined linseed oil that is set in pans and exposed to the sun. This thickens and bleaches the oil. The oil also acquires additional oxygen, allowing faster drying times. Sun thickened linseed oil reacts very much like stand oil. It allows paint to flow, produces bright thin glazes, and resists yellowing.
Grumbacher SunThickened Linseed Oil
A medium that will give paint a harder finish and render it less soluble to cleaners. It lets the paint set more quickly, and becomes harder with age than damar. Copal improves gloss, brilliance, flow (eliminates "shortness") and intercoat adhesion.
Grumbacher Copal Painting Medium
Artist grade linseed oil is a pale golden yellow colored oil that is extracted from the seeds of the Flax plant. This oil has been highly purified, but not processed by heat. Linseed oil can be used by itself; however, it is normally used in combination with other mediums and solvents. Linseed oil lowers viscosity of oil paint but does little to alter the "shortness" of tube oil paint. The oil does produce a tough, flexible paint film that is not likely to crack.
Martin F. Weber Linseed Oil
An oil modified Alkyd resin used as a thinning medium for oil colors which increases the drying rate. Suitable for glazing and detail work. Virtually non-yellowing.
Winsor & Newton Liquin