FIELD: medicine; biology; industrial hygiene. SUBSTANCE: experiment is planned and conducted to form functioning pulsed matrix, from which coefficients of pulsed polynomial can be later calculated. Permissible concentration levels are calculated on basis of pulsed polynomial, taking into consideration corrective function. EFFECT: method is suitable for analysis of systems of any complexity, with factors taken in any combinations; method is simple, reliable and more flexible as compared to prototype methods suitable only for two-factor systems. 4 tbl
