Abstract: The process of the present invention for the recovery of metal ions from a polymeric chelating agent stream or solution comprises the circulation of a loaded polymeric chelating agent stream or solution through an electrolytic recovery cell. The chelating agent is loaded with metal ions or complexes of the species to be recovered which have been extracted from a feed stream or solution. These metal ions or complexes will be reduced and recovered from the chelating polymer by an electrodeposition method. If the chelating agent is used in a continuous flow-type system, the lean polymeric chelating agent can optionally be recycled for further use in extraction of the desired metal species. The addition of scrub and regeneration stages to such a system is optional, depending on feed stream composition.

Abstract: A scrubbing process for high feed concentrations of different materials in liquid streams.

Abstract: In a material transfer device, an articulated arm assembly extends and retracts in a "froglike" motion to transfer an object between a plurality of locations. The articulated arm assembly is rotatable about a pivot point in a radial plane and can be raised or lowered in an axial direction.

Abstract: In a material transfer device, an articulated arm assembly extends and retracts in a "froglike" motion to transfer an object between a plurality of locations. The articulated arm assembly is rotatable about a pivot point in a radial plane and can be raised or lowered in an axial direction.

Abstract: Separating phenylalanine from its admixture with phenylalanine ethyl ester by preferential permeation through a sulfonated polystyrene cation exchange resin membrane.

Abstract: Reagent is added to liquid chromatographic effluent to increase detection sensitivity of sample bands, or to enhance sensitivity with respect to interfering bands which overlap sample bands of interest, using one or more hollow fibers immersed within mobile reagent which is permeated through the walls of the fibers and, thus, ultimately diffused into the column effluent.

Abstract: A method for analyzing the serum phase of a latex solution by permeating low molecular weight components present in the serum phase for a known amount of time through a size selective permeable membrane to a dialysate fluid and sequentially injecting the dialysate fluid into a liquid chromatograph for subsequent analysis.

Abstract: A permselective ion-exchange membrane, preferably comprising hollow fiber(s) immersed within a regenerant, is used to selectively neutralize or suppress the conductivity of electrolyte in a stream of eluent also containing chromatographically separated ions. The invention particularly specifies a chromatographic separating column useful with an electrolyte eluent solution to separate ionic species by elution chromatography, wherein the effluent of the separator column is treated by the described membrane to suppress the conductivity of the electrolyte but not that of the separated ions.

Abstract: Reagent is added to liquid chromatographic effluent to increase detection sensitivity of sample bands, or to enhance sensitivity with respect to interfering bands which overlap sample bands of interest, using one or more hollow fibers immersed within mobile reagent which is permeated through the walls of the fibers and, thus, ultimately diffused into the column effluent.

Abstract: Reagent is added to liquid chromatographic effluent to increase detection sensitivity of sample bands, or to enhance sensitivity with respect to interfering bands which overlap sample bands of interest, using one or more hollow fibers immersed within mobile reagent which is permeated through the walls of the fibers and, thus, ultimately diffused into the column effluent.

Abstract: A separatory device is disclosed wherein a bundle of hollow fibers have their end portions potted in a polyurethane tube-sheet, said polyurethane consisting of an isocyanate-containing prepolymer which is non-catalytically crosslinked with a polyol. The resulting tube-sheet has demonstrated an unexpected degree of adherence to the fibers. In addition, essentially no adverse toxicity effects are encountered in biomedical applications of said device.