| 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 |