Abstract: An apparatus and method for performing enzyme-linked immunological sandwich assays (ELISA) by affinity chromatography. Formation of the antibody-antigen-conjugate complex, and the development of a chromatophore indicator take place in a semi-automated, walk-away, fashion. The immunoassay apparatus comprises a chromatography tank, which further comprises a reaction compartment and a plurality of liquid solvent reservoirs, with a first-liquid reservoir being configured higher than a second-liquid reservoir. The apparatus allows automatic sequential and discrete movement of wash solution, followed by a color development solution, with unbound conjugate being substantially washed away from the immunological sandwich complex before the color development solution automatically comes into contact with the immunological complex.

Abstract: A multi-functional, adjustable, weight lifting and exercise apparatus, is described. The weight lifting apparatus allows a user to configure the apparatus among a plurality of different positions, so that a full range of user support platform incline, as well as, adjustable decline positions, is also obtainable, while allowing at the same time unobstructed user access to barbell weights, which are supported on an adjustable weight support structure, located at the head end of the apparatus. The apparatus is also fully adjustble, so that barbell weights supported on the barbell weight support structure, can be readily accessed and lifted properly in numerous specific exercises.