(under the class definition) Process in which a characteristic or a change in a characteristic of the fluid mixture, of a separated constituent, or of apparatus used in the process is set down for preservation in permanent form or is indicated by means giving information of an audible or a visual nature (e.g., alarm, etc.).
SEE OR SEARCH CLASS
73, Measuring and Testing,
23.2+, for gas analysis and see the class definition of Class 95 for a statement of the line.
