Which type of sample is submitted by an individual or firm for testing purposes?

The type of sample submitted by an individual or firm for testing purposes is known as a service sample. This kind of sample is typically collected from a production batch or a shipment to assess the quality, safety, or compliance of the products being tested. The purpose of a service sample is to provide reliable results that support the evaluation and can be used for decision-making.

Official samples, on the other hand, are usually collected by regulatory officials to ensure that products meet specific standards and regulations. Certification samples are often associated with verifying compliance with specific certification programs, and quarantine samples are taken to assess products that may be under suspicion for contamination or other regulatory concerns. Each of these categories serves distinct roles in the testing process, but service samples are specifically tied to the needs of businesses and individual entities seeking to ensure their products' quality and compliance before reaching the market.