Соответствующая норма
Practice Relating to Rule 73. Biological Weapons
Uruguay’s Organizational Law of Armed Forces (1974) states that it is forbidden for residents of the republic to possess war material for any purpose. Biological agents are included in this category. 
Uruguay, Organizational Law of Armed Forces, 1974, Article 49.
Uruguay’s Law on Cooperation with the ICC (2006) states:
26.2. Persons and objects affected by the war crimes set out in the present provision are persons and objects which international law protects in international or internal armed conflict.
26.3. The following are war crimes:
26. Employing asphyxiating, poisonous or other gases, and all analogous liquids, materials or devices.
46. Using … biological (bacteriological or toxic) or other weapons of mass destruction, irrespective of their nature. 
Uruguay, Law on Cooperation with the ICC, 2006, Article 26.2, 26.3.26 and 26.3.46.