А key element in the system of public administration by labor protection is receiving reliable information about a condition of working conditions depending on levels of influence of harmful and dangerous production factors. Instrumentional monitoring of workings conditions on workplaces is carry on production control of harmful production factors and procedure of a special assessment of working conditions by test laboratories. Thus one of the tasks demanding the decision is development of algorithm of process of a choice of the measuring instruments satisfying areas of accreditation of test laboratory and to the state requirements to performance of these works. For the solution of an objective the author offers a technique of an optimum choice of the instrument equipment which basis the method of expert evaluations (rank correlation). According to basic provisions of a technique in scientific work the algorithm of process of a choice of measuring instruments for carry on of instrumental control of harmful production factors is presented. Criteria of a choice of devices are considered. The mathematical model of process of a choice of measuring equipment including ranging of criteria of a choice of devices is described. According to results of ranging the leading, essential and less significant criteria of a choice for the instrument group participating in experiment are defined. In view of the leading and essential parameters of a choice of the equipment, the complete set of test laboratory by the necessary instrument equipment, according to area of analytical tasks and conditions of measurement install.

Keywords: instrumental control, monitoring of harmful factors, the method of selection of equipment, means of measurement, method of expert estimations

Metodological apporoaches are considered the choise of instrumentation at a complete enviromental wagons labs. Metodology for the optimal choice of instrumets is proposed to achiv the fundamental unifying analytical chemistry and experience eco-analytical laboratories complements existing theoretical approaches

Keywords: information technology, enviromental wagon labs, systematic approach, ecoanalitical tasks, enviromental control, the metodologi of optimal choise of instrumentation