This 30ml pot of Winsor & Newton Calligraphy Ink in Black draws on this company's expertise with colours dating back to the early 19th century, including experience with inks that began in the 1890s. Winsor & Newton Calligraphy Inks are brilliant and lightfast, and made with single pigments wherever that is possible. They are non-waterproof to ensure that flow is even when used with a traditional dip pen or fountain pen, technical pen or brush. Winsor & Newton Calligraphy Ink in Black dries to a matt finish.