| 0015 | Mixing chamber temperature 1.9 K, 1 K pot temperature 2.0 K. Increase mixing chamber heater power to 10 mW. |
| 0310 | Fill N2 cold trap full. |
| | Temperature of 1 K pot 4.54 K, mixing chamber temperature 8.0 K, P2 pressure 676 mbar. Appears as though most mixture has been recovered and there is no leak. Fridge is safe to leave overnight. Turn off mixing chamber heater. |
| 2035 | Close condenser line speedivalve and gate valve to isolate mixing chamber. Close all valves on IGH and nitrogen cold trap 1 speedivalve. Extract helium and both nitrogen cold traps and open path to 1 K pot pump. Evacuate cold traps and wait for them to warm to room temperature. Noticed significant amount of dirt in helium cold trap, which would indicate that it had indeed clogged up. |