| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 129 | DF | CHEMICAL REACTOR {28} |
| 186 | DF | .~ With means applying electromagnetic wave energy or corpuscular radiation to reactants for initiating or perfecting chemical reaction {3} |
| 186.04 | DF | .~.~ Electrostatic field or electrical discharge {4} |
| 186.21 | DF | .~.~.~ Arc or spark discharge means {4} |
| 186.26 | | .~.~.~.~ With electrode moving means {1} |
| 186.27 | DF | .~.~.~.~.~> With current control means |