Instrumentation and techniques utilized for both field and site inspections, as well as for laboratory examinations, are discussed. Key background information to be gathered during a site visit is reviewed. This chapter also discusses the features on a plastic part that allow for generic identification of the material, material manufacturer, processing, and relevant standards to which the product was manufactured. The use of photography and microscopy for obtaining detailed fracture information is also reviewed. The relevance of specific fracture related features such as crack opening displacement, crack branching, discoloration, and gross deformation is also discussed in the context of understanding the failure process(es). Various test methods available for laboratory testing of specific material properties, along with their application to failure analysis, are listed.