Color comparator quantitatively indicating specific substances in body fluids, combines plastic test strip, resembling clock hand, with circular, plastic-covered card printed with indicative colors and corresponding concentrations

摘要

The indicator strip (3) can be rotated about an axis on a base (2) carrying areas of color (6) in a circular pattern about the axis. Concentrations corresponding to the coloration of the areas, are marked quantitatively (7). Preferred features: The indicator strip resembles a pointer of similar radius to the base, a circular disc, with the colors around its edge. There are two sets of colors (6a, 6b), representing differently-colored test materials. The base is card with a thin layer plastic film covering. The test strip comprises plastic.