Holbein Artists' Oil Colour is smooth, highly pigmented and the color range incorporates both traditional colors and modern pigments. All colors are ground up to 10 times in order to achieve a uniform viscosity across the entire palette of 167 colors. For the artist, this uniform viscosity ensures that every color will perform in the same vivid and smooth manner. The manufacturing process in each of the preparation, mixing, grinding, adjustment and filling stages is monitored by reference to optimum quality standards. Throughout the production process, Holbein chemists ensure its quality standards by test inspection of pigment purity, color tone, applicability and adhesion, physical stability, light stability, thermo stability and anti-bacterial stability. The result is a World-Class artist quality oil color without equal. Made in Japan.