The 7502 ICP Direct Reader was recently manufactured by Beijing Second Optic Instruments ractory. A trial of this instrument was made in the analysis of geological samples, 24 major, minor and trace elements were determined simul- taneously. Both linear and nonlinear interference corrections could be made by maans of a computer to correct the interelement line and background interfere- nces. The performances of this sophisticated instrument appeared to be good and both detection limits and precisions are close to or occasionally better than si- milar foreign instruments.