Dr. Ph. Martin's Hydrus fine art watercolour is lightfast, transparent, fine art quality watercolour. This liquid product delivers the same brilliance and permanency as traditional tube watercolours. Made from the finest artist pigments, Dr. Ph. Martin's Hydrus fine art watercolour can be blended and intermixed while still maintaining the transparency and luminosity of the colours. Each set comes in a tray that doubles as a mixing palette and bottle holder, with space for a water cup and six mixing wells. Great for use in technical, calligraphy, fountain pens, and in airbrushes. Each set includes 12 different colours in 0.5 oz (15 ml) plastic bottles with droppers and a custom mixing palette. Set 3 colours: 25H hansa yellow medium,26H chrome yellow, 27H vermilion hue, 28H carmine, 29H crimson lake, 30H quinacridone violet, 31H red oxide, 32H raw sienna, 33H raw umber, 34H turquoise blue, 35H blue aqua, 36H ultramarine red violet.