Pre-Tested® is the name of Grumbacher's professional range of oil colors. It's also the name for a philosophy that permeates the way we manufacture all of our products. Everything Grumbacher makes is tested again and again at every stage of its existence. Grumbachers time-proven formulas are fine-tuned through independent laboratory tests as well as hands-on trial by professional artists. They specify the best ingredients available, putting every new one through a rigorous selection process. They test samples of each and every batch of raw material before we allow our vendors to make shipments. On the factory floor, they sample batches in process. And finally, even after our products are in the field, they continue to track batches and test for quality, performance and shelf life.

Pre-Tested is Grumbacher's flagship. It's the product that, more than any other, represents the way they do business: with care, precision, attention to detail-taking nothing for granted. On a more specific level, it means simply the finest pigments the world can offer, milled in select alkali-refined linseed oil for the professional artist. Pre-Tested stands for optimal color development, high chroma, superior tinting strength, excellent adhesion, outstanding working properties and archival quality. 90 colors, 1.25 fluid ounce (37 ml) tubes. Whites and Ivory Black also available in 5.07 fluid ounce (150 ml) tubes.

Grumbacher® has continued to produce quality oil paint in the tradition of the old masters. Superior quality pigments are combined with highly refined oils in our perfected paint formulas. Grumbacher® is one of the only brands of oil paint to be produced within the United States. Our highly controlled facilities allow us to personally test our paints for a plethora of attributes such as purity and brilliance. With a wide range of rich, vibrant colors, Grumbacher’s® line of Academy® oil paints have been popular with artists generation after generation. This time tested brand of oil color allows painters to experiment with the comfort of knowing that their pieces will leave a legacy. Grumbacher Academy® oil colors offer a quality line of 30 color paints at an affordable price. Only finely ground pigments are used in making this smooth, rich paint. Made in the U.S.A.