73 / | HD | MEASURING AND TESTING |
23.2 | DF | GAS ANALYSIS {15} |
25.01 | .~ By thermal property {4} | |
25.02 | DF | .~.~> With magnetic property (e.g., paramagnetic gas) |
25.03 | DF | .~.~> Thermoconductivity |
25.04 | DF | .~.~> Moisture content or vapor pressure |
25.05 | DF | .~.~> Detector detail |