公开(公告)号：US20240167935A1

公开(公告)日：2024-05-23

申请号：US18515557

申请日：2023-11-21

Applicant: FEI COMPANY

Inventor： Chien-Sheng LIAO

IPC: G01N15/14

CPC classification number: G01N15/1436 ,  G01N15/1404 ,  G01N2015/0065

Abstract: A flow cell for use with a spectrometer is described. The flow cell includes a waveguide having a hollow core. An inlet is fluidly coupled at a first end of the hollow core, and an outlet is fluidly coupled at a second end of the hollow core. A window at the inlet is optically coupled to the waveguide at the second end, and a mirror at the outlet is optically coupled to the waveguide at the second end. The flow cell also includes a first conduit configured to couple a fluid to the inlet, and a second conduit configured to couple the fluid to the outlet. Methods and systems using the flow cell are described. For example, methods and systems for monitoring a bioreactor.