Patent ID: 9267887
Filing Date: 2016-02-23
CPC Classification: B01D,G01N

Claim Text:
1. A flow cell assembly comprising: (A) high-pressure flow cell including a cell body made of a light-transmissive material, wherein the cell body is penetrated by a straight-line flow path for a high-pressure fluid, which allows the high-pressure fluid to be irradiated with excitation light and allows fluorescence of the high-pressure fluid to be detected, wherein the straight-line flow path is formed in a block that has no fusion parts, and is formed with a cross section of 0.1 mm wherein the ratio t/d of the wall thickness t (mm) to the width d (mm) of the straight-line flow path satisfies formula (1) below, where σ indicates the tensile stress (MPa) of the material of the cell body, and P indicates the withstand pressure (MPa) of the cell body; (B) an entry-side cell holder that includes an inlet hole for guiding the high-pressure fluid into the high-pressure flow cell, wherein the inlet hole being disposed to be connected to one opening of the straight-line flow path in the high-pressure flow cell; (C) an exit-side cell holder that includes an outlet hole for outputting the high-pressure fluid from the high-pressure flow cell, wherein the outlet hole being disposed to be connected to the other opening of the straight-line flow path in the high-pressure flow cell; (D) holding means for holding one of the entry-side cell holder and the exit-side cell holder; and (E) pressing means for pressing the other of the entry-side cell holder and the exit-side cell holder toward the cell body, wherein the high-pressure flow cell is held between the pair of cell holders by a pressing force exerted by the pressing means, and a flow path of the flow cell assembly is formed from the inlet hole through the straight-line flow path to the outlet hole, wherein at least one of the inlet hole and the outlet hole is formed in the same straight line as the straight-line flow path of the cell body, and an end of at least one of the inlet hole and the outlet hole is blocked by a window plate made of a light-transmissive material, and wherein the cell holder having the window plate has a connecting hole connected to at least one of the inlet hole and the outlet hole in a part inside the window plate; light is able to enter or exit through the window plate in the flow direction of the straight-line flow path; and the high-pressure fluid is able to be input from or output to the outside of the cell holder, through the connecting hole.