Analytical Auditing Procedures for Food Contact Declarations of Conformity
Auditing food contact declarations requires matching batch numbers to accredited migration reports, verifying worst-case simulant choices, and testing NIAS.
Retain Sample Protocol
Meaning
Procedure for archiving material specimens ensures that a physical record of each production run is available for future testing. A retain sample protocol requires the storage of both raw resin and finished parts in a controlled environment. This archive is used to resolve quality disputes and investigate part failures.
Storage Condition
Protecting the samples from heat and ultraviolet light is necessary to prevent premature degradation. The retain sample protocol specifies that items should be kept for a period that matches the expected life of the product. This ensures that the material remains representative of the batch sold to the customer.
Quality Investigation
Comparative testing between the retained specimen and a failed part can reveal if the issue was caused by the material or the moulding process. Following a retain sample protocol allows the laboratory to re-verify the melt flow rate or impact strength months after the original run. It provides a baseline for forensic analysis.
Risk Management
Having a physical backup of the production lot protects the manufacturer from false claims of material substitution. The retain sample protocol is a requirement for many ISO 9001 certified quality systems. It offers peace of mind to both the supplier and the end user.