73 / | HD | MEASURING AND TESTING |
863 | DF | SAMPLER, SAMPLE HANDLING, ETC. {11} |
863.81 | .~ Withdrawing through conduit or receptacle wall {4} | |
863.82 | DF | .~.~> Capture element movable to plural loci |
863.83 | DF | .~.~> With metering means or pump {1} |
863.85 | DF | .~.~> Lock or seal for sampler insertion or removal |
863.86 | DF | .~.~> Valve or restriction |