Quality Assurance Procedure
Archiving a portion of a tested material provides a physical record that can be used for verification if the original results are questioned or if a dispute arises between parties. This split sample retention involves dividing a single batch of fabric or yarn into two or more identical parts before any analysis takes place. One part is sent to the primary laboratory while the other is kept in a secure and controlled environment.
Verification Protocol
If the initial test result is near a critical threshold or if the findings are unexpected, the stored portion is used for a second round of testing. This re testing can be performed by the same laboratory or by an independent third party to confirm the accuracy of the original data. Having a split sample retention policy reduces the likelihood of costly shipping delays caused by administrative errors or technical failures in the lab.
It also provides a way to verify the performance of the testing equipment over time.
Storage Standard
Samples must be kept in conditions that prevent degradation from light and moisture. The duration of the storage is typically defined in the commercial contract and often lasts until the finished goods have been accepted by the retailer. For split sample retention to be valid, the storage container must be sealed and clearly labeled with the batch number and the date of the original test.
Dispute Resolution
When a disagreement occurs between a mill and a buyer regarding the quality of a shipment, the retained sample acts as the objective evidence for mediation. It ensures that any subsequent analysis is performed on the exact same material as the first test. Consistent split sample retention is a fundamental requirement for a transparent and accountable supply chain.
