Non-destructive testing (NDT) methods include a wide range of analytical techniques to evaluate a variety of materials, elements, welds, systems, etc., without causing any damage or harm to the sample. This article focuses on the different NDT methods used in the textile industry. Textile testing instruments manufacturers use a variety of NDT methods for toxicological and other analytical tests to analyze their products for harmful substances such as allergens, heavy metals and even carcinogens. Several toxic metals such as cadmium, antimony, lead, chromium, mercury and zinc are either present in natural textile fibers, leached during the dyeing process or present in protective agents used to store textiles. Vibrational spectroscopy has been a commonly used method for nondestructive testing of textiles because when light interacts with molecules on the textile surface, it produces vibrations specific to the functional groups or chemical bonds present in the material. These vibrations ...