Designed specifically for on-the-spot forensic investigations, this book discusses how to confirm the reported identity of a substance when the identity of the hazardous material is suspected but is not considered reliable. It covers methods to verify the accuracy of a label to the contents by using a matrix of field tests. The author provides instruction on how to gather as much information as possible from the reported or labeled contents and how to use the information to determine which physical and chemical tests listed in the book will confirm the identity of the suspect compound.