When investigating fires that may have been accidental or intentionally set, laboratory testing of contents can be crucial in determining whether replacement or cleaning is appropriate.

One of the first steps in laboratory testing of fire debris evidence is the collection and preservation of the samples. This involves carefully collecting debris samples from the scene of the fire and packaging them in airtight containers to prevent contamination. The samples are then transported to the laboratory for analysis.

Residual odors are a result of the partial combustion of fuels. Typically the odors are low molecular weight aldehyde. The determination of aldehyde levels can help establish if the appropiate levels of cleaning has been conducted. The identifiation of unqiue odors may be attained by utilizing vapor collections and GC/MS analysis such as EPA TO-15 for toxic organics.

It is important to note that laboratory testing of fire debris evidence is not without challenges. There are many variables that can affect the results of these tests, including the type of material the sample was collected from, the amount of time that has passed since the fire, and the extent to which the fire burned. However, when conducted by qualified professionals such as those at Armstrong Forensic Laboratory, laboratory testing is a valuable tool in fire investigations.

In addition to its testing services, Armstrong Forensic Laboratory also offers expert witness testimony in court cases related to fire investigations. Their licensed and experienced experts can provide testimony about the methods and results of their testing to help build a stronger case for their clients.