Ashford Dye Primary KitContains 3 primary colours Red, Sapphire and Bright yellow to make all the colours of the rainbow. Dyes require white vinegar as the mordant and heat to set (microwave, stove top or steam). To make the dye solution: dissolve 10gm dye powder in a little hot water. Once dissolved add enough cold water to bring the solution to 850mls. Add 150mls white vinegar. This makes a 1% dye solution that will dye 1kg of fibre, yarn or fabric. For detailed material