(under the class definition) Subject matter which includes methods of preparing a material or separating one material from other materials for an invisible radiation test or controlling a material while being tested by invisible radiation and subjecting the material so prepared, separated or controlled to a radiation test.
(1) Note. Preparation or controlling includes acting upon the test material so that the radiation test can be performed and includes temperature and pressure control of the material, mixing, grinding, drying and chemical and physical reactions as long as no details are given of the chemical or physical process.
SEE OR SEARCH CLASS
73, Measuring and Testing, particularly
863+, for a sampler.
356, Optics: Measuring and Testing,
36+, for the preparation of material and testing of the prepared material by an optical test. 436, Chemistry: Analytical and Immunological Testing,
1+, for methods having a chemical reaction or a physical separation process involving a test material and the examination of the material by radiation.
