Patent ID: 11914009
Assignee: OSAKA UNIVERSITY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. A gas replacement method for replacing gas in an NMR probe, comprising the steps of:
depressurizing an NMR probe that holds a sample therein and is set in an NMR apparatus, the NMR probe being configured to be used under low temperature;
supplying gas from a gas supply device into the NMR probe after depressurization to thereby pressurize the NMR probe; and
alternately repeating the depressurization and pressurization before blowing a cooling gas into the NMR probe to thereby replace gas in the NMR probe until a percentage of an amount of air remaining in the NMR probe after replacement with the gas from the gas supply device becomes equal to a target value.