The invention is related to water-soluble products and pharmaceutical formulations in solid or liquid form mainly for parenteral use. Each instrument integrates a plurality of \u201cplug-n-play\u201d removable all-in-one precast \u201cunigel\u201d cassettes that each houses one or more of first and second dimension gels casted on a gel supports, wherein the cassette capacities of the instrument can be expanded to accommodate increasing numbers of cassettes. The device may include a tilt switch, a closure switch, and other electronics that improve patient compliance. Arsenic as an n-type dopant controls the resistivity of the silicon carbide single crystal.