| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 50 | DF | ANALYZER, STRUCTURED INDICATOR, OR MANIPULATIVE LABORATORY DEVICE {11} |
| 68.1 | DF | .~ Means for analyzing liquid or solid sample {11} |
| 75 | DF | .~.~ Including titrator {1} |
| 76 | | .~.~.~ Conductiometric type {1} |
| 77 | DF | .~.~.~.~> With integrating or differentiating means |