The computer technology for precious metals examination by method of colorimetry aided with auxiliary chemical reaction is created and investigated. The essentially new practical and methodical novation allowing to shift some orders lower the bottom limit of a measuring range is offered, the theoretical basis for micro- and macroanalysis computer technology is established. Experimentally confirmed, that with the help of new technique it is possible to detect micro probes of silver, gold, platinum and palladium about 10-9 g. It is acceptable to use the proposed technology for quantitative estimation of other substances representing interest in this or that area of expertise.

Keywords: examination, macroanalysis, microanalysis, colorimetry, computer technologies