Duration	60 min until −160 °C
Steps of the programme
Step 1	4 °C during 10 min
Step 2	⇩ à 1.5 °C/min until −12 °C
Step 3	⇩ à 45 °C/min until −50 °C
Step 4	⇧ à 9 °C/min until −28 °C
Step 5	−20 °C during 5 min
Step 6	⇩ à 1 °C/min until −35 °C
Step 7	⇩ à 1.5 °C/min until −45 °C
Step 8	⇩ à 6 °C/min until −160 °C
Step 9	−160 °C during 99 min