Botulin is produced by "Clostridium botulinum" and causes the deadly disease botulism. Five other German firms supplied equipment to manufacture botulin toxin and mycotoxin for germ warfare. Dosages of botulin toxin have been based on expert opinion rather than evidence-based practices. Tests were undertaken using four pound bombs filled with botulin. The final product, however, was solid botulin pills that would dissolve in liquid.