Book excerpt: Material characterization tests for objects of art and archaeology is not confined to museum professionals. It serves as an excellent and essential companion for conservators of outdoor sculpture, monuments, and buildings. The tests are applicable to a wide range of object classes including metal, textile, leather, paper, plastics and architectural materials. In addition to presenting the detailed methodology for carrying out each tests, the authors have evaluated the effectiveness of each test in order to assist the reader in selecting the most applicable test and interpreting the results.