8. Step 8: Establish critical limits

For each identified CCP and point of attention, it is necessary to define one or more parameters that can provide proof that the point is "under control". In the case of CCPs, these parameters (critical limits) must be quickly and easily measurable and observable, to enable the quickest possible reaction when a deviation occurs (corrective action).

It should be noted that LCs based on subjective data, such as visual checks, may be acceptable provided they are accompanied by clear specifications at the workstation as to what is acceptable and what is not (photos, diagrams, etc.). However, this should be the exception rather than the rule, as the notion of...