| 1150 | Mixture has stagnated overnight. Open valve 6 to 14.1%. |
| | Fill N2 cold trap full. |
| | Mixing chamber temperature 84.3 K and dropping. |
| 1205 | Mixture flow rate a little too fast. Close valve 6 to 14.0%. |
| 1235 | Open valve 6 to 14.1%. |
| 1355 | Mixing chamber temperature 81.2 K. Pump out N2 exchange gas. |
| 1528 | IVC Pressure 6.3e-6mbar. Isolate pumping station. Pump mixture into dump. |
| 1533 | IVC He background 1.3e-8cc/s. |
| 1550 | Conduct throughput test: 47 mbar/min. No change in leak rate: no gross leak. Pump mixture into dump. |
| 1610 | Start blowing out nitrogen. |
| 1650 | Nitrogen appears to be out, although less than 25 l was recovered. Perhaps the bottom of the nitrogen transfer stick did not correctly mate with the cone, or there is a blockage. |
| 1800 | Start evacuating main bath. |
| | Oil from 1 K pot pump has contaminated exhaust. Around ¾ of oil has escaped. This might be due to the high helium gas pressure of 420 mbar used to blow out the nitrogen. This lies below the manufacturer's stated maximum value of 500 mbar, but the age of the pump should be taken into account. |
| | Interrupt evacuating the main bath and take exhaust apart to investigate spread of contamination: pretty far, in that the valve between the exhaust and helium recovery system has also been contaminated. |
| | Go to dinner. |
| 1900 | Take apart all piping on exhaust side for a thorough clean. |