This block printing ink has the perfect consistency for lino and wood block printing, and transfers onto paper. It is non-toxic, water-based, and washes up easily in water. Derivan developed this unique product for art and craft courses to give people a premium quality block printing ink that did not contain harmful solvents. Derivan Block Ink is therefore non-toxic and easy to clean up, while still giving the feel of a professional-grade oil-based printing ink. Derivan Block Ink is available in open mouth 250ml jars. The consistency of Derivan Block Ink will always give you sharp, accurate prints.