A small glass beaker, narrow at the base and widending towards the top with a spout. The glass is blue/ purple in colour. This beaker was used by Marie Skłodowska-Curie in her research, and the glass has been discoloured by radiation emanating from radium, likely solutions of radium salts. Glass flask used by Marie Curie, late 19th-early 20th century. 1890-1920