 if the sample must also be used for the fullscale definitive test, the 36-h limit on holding time (see Subsection 8.5.
The 36 hour limit is on holding time before the sample must be released.
mnli hypothesis: The 36 hour limit is on holding time before the sample must be released. premise:  if the sample must also be used for the fullscale definitive test, the 36-h limit on holding time (see Subsection 8.5.