Detection of fire accelerants

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Detection of fire accelerants is the process that a fire investigator uses to determine if fire accelerants were used at a fire scene. This process involves a combination of both field work and laboratory analysis by fire investigators and chemists.

In order for a positive identification of a fire accelerant to occur both field work and laboratory analysis must take place. This is because when a fire accelerant is used only ignitable liquid residues (ILRs) remain at the scene. It is the chemist's job to identify these ILRs and the investigators job to determine if they were used as fire accelerants or just present at the scene under normal circumstances.