The Laboratory  shall transfer the Sample’ s external chain of custody and other non -analytical records to the  Testing  Authority , either as originals or copies, immediately or upon reque st.  5.3.12  Secondary  Use or Disposal of  Samples  and Aliquots  The Laboratory  shall maintain SOP(s) pertaining to  the secondary use of Samples  or Aliquots  for research or quality assurance , as well as for the disposal of Samples and Aliquots .