Flow cell

Claim 2

A flow cell for containing fluid during the making of an analysis thereof comprising means defining a chamber including windows provided at a set of opposed extremities of said chamber, and flow-through supply conduit means and exhaust conduit means for the supplying and exhausting of fluid to and from said chamber during flow of fluid through the cell, said chamber having opposed walls bounding another set of opposed extremities of said chamber lying in a dimension transverse to the dimension having said windows, said supply and said exhaust conduit means communicating with said chamber through one wall of said other set of opposed walls, whereby fluid enTering the chamber enters while flowing counter to the flow of fluid leaving said chamber, said supply conduit means comprising branched conduit portions with one conduit portion communicating with said chamber at one location which is adjacent one window and another conduit portion communicating with said chamber at another location adjacent the other window, said exhaust conduit means communicating with said chamber at a third location intermediate said one and said other locations.

Claim 3

The flow cell of claim 1, wherein said one and said other conduit portions straddle said means defining the chamber in regions leading to said one and said other locations.

Claim 4

The flow cell of claim 1, wherein each of said supply and said exhaust conduit means includes a tube section, said tube sections extending out from opposite ones of said other set of opposed extremities of said chamber, the tube section of said supply conduit means connecting with said branched conduit portions of said supply conduit means.

Claim 5

A flow cell for containing fluid during the analysis thereof with light transmission through said fluid comprising an integral transparent body including portions defining a chamber for holding fluid and portions forming flow-through supply conduit means and exhaust conduit means for the supply and exhaust of fluid to and from said chamber during flow of fluid through the cell, the portions of said body defining said chamber including confronting spaced window regions adapted for the passage of light in a path therethrough and opposed walls bounding opposite extremities of said chamber in a direction extending transverse to the path of light through said window regions, said supply and said exhaust conduit means each communicating with said chamber through one wall of said opposed walls, whereby fluid entering the chamber enters while flowing counter to the flow of fluid leaving said chamber, one of said conduit means comprising branched conduit portions with one conduit portion communicating with said chamber at one location which is adjacent one of said window regions and another conduit portion communicating with said chamber at another location adjacent the other of said window regions, said other conduit means communicating with said chamber at a third location intermediate said one and said other locations.

Claim 6

A flow cell for containing fluid during the analysis thereof with light transmission through said fluid comprising an integral transparent body including portions defining a chamber for holding fluid and portions forming flow-through supply conduit means and exhaust conduit means for the supply and exhaust of fluid to and from said chamber during flow of fluid through the cell, the portions of said body defining said chamber including confronting spaced window regions adapted for the passage of light in a path therethrough and opposed walls bounding opposite extremities of said chamber in a direction extending transverse to the path of light through said window regions, said supply and said exhaust conduit means each communicating with said chamber through one wall of said opposed walls, whereby fluid entering the chamber enters while flowing counter to the flow of fluid leaving said chamber, one of said conduit means comprising branched conduit portions with one conduit portion communicating with said chamber at one location which is adjacent one of said window regions and another conduit portion communicating with said chamber at another location adjacent the other of said window regions, said other conduit means communicating with said chamber at a third location intermediate said one and said other locations.

Claim 7

The flow cell of claim 4, wherein said supply conduit means comprises a supply tube section projecting away from said chamber, from the extremity of the chamber bounded by the other wall of said opposed walls, having said branched conduit portions in joint communication therewith and said branched conduit portions straddling said chamber, and said exhaust conduit means comprises an exhaust tube section projecting away from said chamber, from the extremity of said chamber bounded by said one wall of said opposed walls.