| TR.DO.01 | Probe dissolved oxygen electrodemwith 1m cable | 1/Ea. | 319,120 |
| TR.DO.03 | Electrode, Dissolved Oxygen, with 3m Cable | 1/Ea. | 335,910 |
| TR.DO.05 | Electrode, Dissolved Oxygen, with 5m Cable | 1/Ea. | 347,110 |
| TR.DODIA | Diaphragm Cap for DO Electrode | 1/Ea. | 55,990 |