Patent ID: 11898949
Assignee: NATIONAL INSTITUTE OF TECHNOLOGY AND EVALUATION
Field: Measurement (Instruments)
Classification: CPC G  B | IPC G

Claim 0:
1. A fine bubble elimination method comprising
a target liquid acquiring step of acquiring a target liquid containing ultrafine bubbles by restoring a lyophilized target object;
a container installing step of installing a container containing the target liquid at an installation position; and
an ultrasonic irradiation step of irradiating the target liquid containing the ultrafine bubbles having a bubble diameter of less than 1 μm with an ultrasonic wave from an ultrasonic irradiation device to reduce the ultrafine bubbles in the target liquid,
wherein the ultrasonic irradiation step irradiates the target liquid installed at the installation position with an ultrasonic wave having a frequency of 430 kHz or more, and
a lower part of the container installed at the installation position is always fixed at an antinode in a standing wave of the ultrasonic wave emitted from the ultrasonic irradiation device.