Supreme professional quality. A virtually perfect colour range; many are truly unique, such as the high transparency colours (transparent oxides, Rembrandt Rose, etc.). Each colour is made from the best and purest pigments, ground to extreme fineness in pure linseed oil from the first pressing. Poppy oil is used for white and a few light shades to deter yellowing. The raw materials are admitted to the production process only after stringent laboratory monitoring. The colours are ground to their optimal fineness, depending on the properties of the pigments. Thoroughly tested for brilliance, fineness, drying time, elasticity, viscosity and surface adhesion.Rembrandt Artist's Oil Colours come in 40 ml and 150 ml tubes.