| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 919 | | BURETTES; PIPETTES [B01L 3/02] {5} |
| 920 | DD | .~> Burettes, i.e., for withdrawing and redistributing liquids through different conduits [B01L 3/02B] {1} |
| 922 | DD | .~> Pipettes, i.e., with only one conduit for withdrawing and redistributing liquids [B01L 3/02C] {1} |
| 930 | DD | .~> Drop counters or drop formers [B01L 3/02D] |
| 931 | DD | .~> Interchangeable or disposable dispensing tips [B01L 3/02E] {2} |
| 934 | DD | .~> Mounted within a receptacle [B01L 3/02F] |