"General Electric marketed several commercial models of their automatic CNCs; the first of these “continuous condensation nuclei counters” was
described by Skala (1963). When Ted Rich, George Skala, and others left General Electric to form Environment/One, a new series of continuous flow
photoelectric instruments was developed. The first of these was the Rich 100, which came on the market in 1973. An updated version of this instrument,
the Rich 200, is still on the market." [2] |