(under subclass 2) Processes or compositions for a test in which a chemical reaction is included in a process for detection of leaks.
(1) Note. Included in this subclass are processes for determining leaks in a closed system, or, equipment failure wherein the material leaking out of the closed system, or a tracer leaking from the closed system, is determined by a chemical reaction, e.g., reaction with a colorimetric indicator. Examples of closed systems are refrigeration systems, heat exchangers, tanks, etc.
SEE OR SEARCH CLASS
73, Measuring and Testing,
40+, for physical tests of leakage; 598 and 600 for flaw or discontinuity detection by use of a vibration.
252, Compositions,
62.52, for a magnetic flaw detection composition.
374, Thermal Measuring and Testing, for thermal measuring and testing.
