4f3d4ffe_inuum___BioPharm_International__Justification
[Process parameters] Antifoam concentration [Initial risk assessment] No [Justification] 
Knowledge from previous studies have defined acceptable range to have no impact to quality. Keep constant in scale-up.
Determining Criticality-Process Parameters and Quality Attributes Part I: Criticality as a Continuum | BioPharm International
Justification