Abstract: The present invention relates to a method of particle separation comprising preparing a suspension of particles containing at least one recognizable target particle in a suspending solution, labeling the target particle with a conjugate marker, wherein the conjugate marker comprises at least one recognition unit for the recognizable target particle and at least one peroxidase enzyme, contacting a gelatin surface with the suspending solution, adding developer to the suspending solution in contact with the gelatin surface and in the presence of phenol to attach the target particle to the gelatin surface, and washing the gelatin surface to remove unattached particles. The method may also include detecting the presence of the target particle on the gelatin surface as well as detaching and recovering the attached particles after removal of the non-target particles.

Abstract: This invention relates to a composition of matter comprising predominantly silver metal microribbons, wherein the microribbons are at least 1 micron in length×0.1 to 0.5 microns in width×0.05 to 0.5 microns in height.

Abstract: This invention relates to a composition of matter comprising associated predominantly silver nanoparticles, and a method of making said nanoparticles. It further relates to articles comprising said nanoparticles.

Abstract: A method of processing photographic color papers is carried out using an aqueous single-part photographic bleach-fixing composition in a bleach-fixing step for less than 60 seconds. The single-part bleach-fixing composition has a pH of from about from about 4.4 to about 5.4. It comprises at least 0.1 mol/l of an iron ammonium-ligand photographic bleaching agent that comprises at least 95 mol % a ferric ammonium-ligand photographic bleaching agent provided that the ligand in the bleaching agent is not diethylenetriaminepentaacetic acid, at least 0.1 mol/l of a thiosulfate as the sole photographic fixing agent, and sulfite ions present in an amount sufficient to convert at least 50 mol % of the ferric ammonium-ligand photographic bleaching agent to ferrous ammonium-ligand compound within 30 days at 20 to 45° C. At least 90 mol % of the total ammonium and alkali metal cations in the bleach-fixing composition are ammonium ions.