A flow through cell for non-invasive monitoring of fluids flowing therethrough includes a membrane covered view window through which sensors may monitor the fluids. The membranes are secured in position by a frame and retainer assembly with the frame and retainer clamping the membranes in place between...http://www.google.es/patents/US5641458?utm_source=gb-gplus-sharePatente US5641458 - Flow through cell assembly
