Establish validated critical limits – Step 8, Principle 3
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Hazard analysis and critical control point (HACCP) consists of seven principles and is typically described in 12 successive steps. This guidance document provides information on how to set and validate critical limits for each Critical control point (CCP) (Step 8 / Principle 3) to develop an effective HACCP system in accordance with the Codex Alimentarius General Principles of Food Hygiene (CXC 1-1969).
Critical limits establish whether a CCP is in control, and can, therefore, be used to separate acceptable products from unacceptable ones. Critical limits should be measurable or observable and typically use minimum and/or maximum values or critical parameters, such as temperature, time, moisture level, pH, aw, conveyor belt speed, etc. Critical limits should be scientifically validated to ensure they are capable of controlling hazards to an acceptable level. In many cases, CCPs can be validated using available information and existing studies from credible sources.
This publication is part of the FAO Good Hygiene Practices (GHP) and Hazard Analysis and Critical Control Point (HACCP) Toolbox for Food Safety series. The toolbox is a central repository of practical guidance and resource materials to strengthen food safety capacities, both public and private, in order to develop and implement food safety management programmes in accordance with the Codex standards.
Care was taken to consider the challenges faced by small food business operators and primary producers in low- and middle-income countries, and those with an institutional role, such as government officials, academia and capacity building organizations.