Grumbacher Academy Oil Paint, 150 ml/5.07 oz, Titanium White A highly opaque white with a stiffer consistency than Titanium White Soft, it creates velvety, matte texture when dry. It boasts the highest tinting power of all the white except for Pre-tested Superba White, which would be its equal in tinting strength Titanium White has a tendency to yellow slightly over time when used straight from the tube. Consider using Pre-tested Superba White for masstone work Color is made with finely ground pigment and has an ASTM lightfast rating of 1-Excellent; Made in USA Smooth, rich paint is highly pigmented and has superior tinting strength at a single student price The non-metallic colors in the Academy Oil student line correlate to the Pre-tested professional line, allowing students to graduate to a professional grade paint with ease