Watercolours are made from pigments contained within a water-based solution, so when applied, appear translucent and vibrantly coloured. They are usually purchased as a dried cake of dense pigment, known in its two size varieties as either a ‘pan’ or ‘half pan’ - each half pan is approximately 15mm x 20mm and contains roughly 2ml of paint material.

How you select the form of your watercolour depends on the size of the paint brushes that you use, and how portable you need them to be - Half-pans tend to fit better into small, travel-friendly tins that are perfect for painting on the go, but if you’re creating large scale works, or you’re based more in the studio, then full pans are the best way to go.