Cornelissen : Pigment Powders By Weight
Available in different colours, in 50g, 100g, 250g or 500g.
Artist-quality pigments from L. Cornelissen & Son, London. Please note that every pigment requires a different volume of oil to bring it to the required consistency. This varies enormously, so that a pigment like Alizarin, for instance, requires almost twice as much oil by volume as White Lead. It is advisable to avoid fast-drying colours in high oil content such as Umbers, Siennas and Cobalt Blues in underpainting.
Please remember that some artist pigments are toxic. Even though most painters will only ever work with very small amounts of pigment, it is a good idea to wear dust masks when mixing, as a precautionary measure.