Abstract: A micro-fluidic cartridge enables analysis of biological samples of fluid form particularly by means of optical systems. The micro-fluid cartridge includes a body, at least one fluid inlet located on the body, at least one channel connected to fluid inlet from one end and allowing flow of fluid there through, at least one first chamber arranged in a fluid communication with channel on the body, at least one biological chip located inside the first chamber and structured to keep certain components inside the fluid, at least one cover connected to the body in a manner preventing leakage of liquid from channel to outer environment on the body and having light penetration on part corresponding to at least biological chip.

Abstract: A process for using reduced vat dyes in a continuous dyeing process for production of dyed yarns and fabrics of different colors. In the process, dye composition is introduced to a treatment unit for reduction to desired dye composition. The dye concentration in the treatment unit is lower than feeding dye concentration so that dye precipitation does not occur, but significantly higher than the circulating dye concentration so that the dye is reduced efficiently. Although the preferred location for the treatment unit is before the circulation line, it may be at any location before the dip-dye tank.