| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 913 | | TEST TUBES [B01L 3/14] {3} |
| 914 | DD | .~> Specific test tube, per se [B01L 3/14B] {1} |
| 916 | DD | .~> Closing or opening means, e.g., corks, bungs [B01L 3/14C] {1} |
| 918 | DD | .~> Specially adapted for centrifugation [B01L 3/14D] |