PERFECCIONAMIENTOS EN UN APARATO DE ANALISIS PARA LA DETER- MINACION OPTICA DE SUBSTANCIAS EN SOLUCION

摘要

The instrument comprises as the main optical element a waveguide carrying a reactant specific to an analyte to be determined. Light is injected at one end (proximal end) of the waveguide and is reflected from the other end (distal end) so that it travels forwards and backwards in the guide before being collected. Along its path it interacts with a complex forming on the surface of the guide as the result of the reaction of said reactant with the analyte whereby a light signal is produced of a wavelength different from the exciting signal. The distal end of the waveguide is provided with filter means to block the exciting residual signal wavelength and to freely pass the response signal wavelength thus minimizing background noise.