Acid Violet 6BS by Badische Anilin & Soda Fabrik (BASF)...
Acid Violet 6BS by Badische Anilin & Soda Fabrik (BASF) Ludw
Acid Violet 6BS by Badische Anilin & Soda Fabrik (BASF) Ludwigshafen A/Rhein in Germany. One of a collection of colour dyes in bottles from the Colour Museum in Bradford, West Yorkshire, c.1900.