Patent ID: 11881417
Assignee: SCREEN HOLDINGS CO., LTD.
Field: Chemical engineering (Chemistry)
Classification: CPC H  B  Y | IPC B  H

Claim 5:
6. The substrate processing apparatus according to claim 1, further comprising:
a first supply liquid tank for storing said first supply liquid, in which said first supply liquid is exposed to said gas; and
a second supply liquid tank for storing said second supply liquid and removing said gas from said second supply liquid,
wherein said first supply liquid line together with said first supply liquid tank forms a first circulation flow path by taking in said first supply liquid from said first supply liquid tank and returning said first supply liquid to said first supply liquid tank,
a filter is provided between said first concentration measurement part and said first connection position in a flow direction of said first supply liquid in said first circulation flow path,
said second supply liquid line together with said second supply liquid tank forms a second circulation flow path by taking in said second supply liquid from said second supply liquid tank and returning said second supply liquid to said second supply liquid tank, and
a filter is provided between said second concentration measurement part and said second connection position in a flow direction of said second supply liquid in said second circulation flow path.