“…The more conventional effluent gas analysis, EGA, coupled with DTA, has continued to be of value for identification of steel inclusions (20,197,198). After DTA has provided inclusion identification, EGA can be used for quantitative estimation after calibration-for example, response to C02 from known weights of CaCOe (198). Chromatographic analysis, incorporating an eight-port valve, was used (20) for continuous monitoring of N2.…”