| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 129 | DF | CHEMICAL REACTOR {28} |
| 211 | DF | .~ Including solid, extended surface, fluid contact reaction means; e.g., inert Raschig rings, particulate absorbent, particulate or monolithic catalyst, etc. {10} |
| 219 | ![]() | .~.~ And means loading contact material into, or unloading contact material from, reactor or means providing internal contact material reservoir |