Patent ID: 6747740
Filing Date: 2004-06-08
Classification: G01N

Abstract:
A photometric measurement flow cell comprising:a cell body having a first end and a second end; a fluidic channel allowing the passage of fluids, contained within said cell body; an element holder contained within said first end of said cell body wherein said element holder has a substantially planar sealing surface for receiving an element said substantially planar sealing surface of said element to be fixed in a non-adjustable manner; a non-adjustable stepped element having a stem and a base, said stem having an end surface protruding into said fluidic channel creating a fixed, non-adjustable fluidic measurement pathlength and said base having a substantially planar sealing surface, said substantially planar sealing surface of said base fixedly abutting said substantially planar sealing surface of said non-adjustable stepped element to be sealably secured in a non-adjustable manner in said element holder; said non-adjustable stepped element contained within said element holder and sealed within said cell body by a sealing gasket positioned between said substantially planar sealing surface of said non-adjustable stepped element and said substantially planar sealing surface of said cell body whereupon pressure exerted against said substantially planar sealing surface of said non-adjustable stepped element and said substantially planar sealing surface of said cell body cause said non-adjustable stepped element to be fixed and reliably sealed in a non-adjustable manner within said cell body with said stem protruding into said fluidic channel creating said fixed, non-adjustable fluidic measurement pathlength.