Flow cell for optical detector and method of forming same

Details Flow cell for optical detector and method of forming same Flow cell for optical detector and method of forming same

G - Physics

01

N

G01N 1/10 (2006.01)

Patent

CA 2643263

A flow cell for optical detector includes a flow cell body, a face-seal window, and a pressed illumination window. The flow cell body is formed of an inert material and includes large and small bores, and inlet and outlet passageways in fluid communication with the small bore. The face-seal window is affixed within the large area aperture to form a liquid tight seal, while the pressed illumination window is press-set into the small bore. The pressed illumination window is spaced away from the face-seal window to form a sample chamber having a pathlength distance .gamma.. The face-seal window and the pressed window provide an optical path through the sample chamber. Preferably, the flow cell body is formed of PEEK. Methods of forming and using the flow cell are also disclosed.

L'invention porte sur une cuve à flot continu de détecteur optique comprenant un corps, une fenêtre frontale étanche et une fenêtre d'éclairage. Le corps est fait d'un matériau inerte présentant une grande ouverture et une petite ouverture et des orifices d'entrée et de sortie en communication fluide avec la petite ouverture. La fenêtre frontale étanche, fixée à la grande ouverture, forme un joint étanche aux liquides, tandis que la fenêtre d'éclairage est montée à la presse dans la petite ouverture. Les deux fenêtres, espacées et se faisant face, délimitent une chambre à échantillons d'une longueur de trajectoire .gamma., constituant le chemin optique. Le corps de la cuve est de préférence en PEEK. L'invention porte également sur des procédés de formage et d'utilisation de la cuve à flot continu.

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