What is an exemplar in the context of fire investigations?

In the context of fire investigations, an exemplar refers to a duplicate object or a sample that is used for testing purposes. This is critical for comparison against evidence collected from the fire scene to determine the cause of the fire. For instance, an exemplar might be a similar appliance, material, or component that is undamaged and can be subjected to tests. By comparing fire scene evidence with the exemplar, investigators can better identify specific failure points or ignition sources that contributed to the fire.

The use of exemplars is fundamental because it allows for controlled testing conditions, leading to more accurate conclusions about how a fire may have behaved in relation to the materials involved. Such comparisons are often essential when determining if an object contributed to, or started, a fire, enhancing the quality and reliability of the investigation's findings.