 She stated that the majority of canisters used the main component CS gas, supplied by Cóndor of Brazil, which meets Geneva Convention requirements.However, 72% of the tear gas used was expired and other canisters produced in Venezuela by Cavim did not show adequate labels or expiration dates.Following the expiration of tear gas, Krauter notes that it "breaks down into cyanide oxide, phosgenes and nitrogens that are extremely dangerous".