| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 50 | DF | ANALYZER, STRUCTURED INDICATOR, OR MANIPULATIVE LABORATORY DEVICE {11} |
| 99 | DF | .~ Miscellaneous laboratory apparatus and elements, per se {5} |
| 104 | ![]() | .~.~ Holder, support, housing, or hood |