Please see IR-4 National SOP (SOP N-03.1) for instructions regarding Test Substance Container Disposal Approval. IR-4 National SOPs can be found in eQA. (https://ir4-eqa.cals.ncsu.edu/tms). Please reach out to Christina Dineen (cdineen2@ncsu.edu)   for any questions, or Johanna Mazlo (jmazlo@ncsu.edu)   for eQA access.