The purpose of the work was to assess the degree of Salmonellae detection in the samples contaminated with microflora using different media, i.e. buffered peptone water (ZWP), medium with sodium tetrathionate (MK), broth with selenite (SF) and Rappaport — Vasiliadis’ medium (RW). The studies were performed in three media (RV, MK, SF) at the presence of one strain from accompanying microflora. In ZWP medium Citrobacter freundii and Proteus but not Enterobacter cloacae inhibited the growth of Salmonella spp. After 24 and 49 hours of incubation of three media (RV, MK, SF) the degre of salmonellae detection was tested on BGA medium. It was found a negative influence of Citrobacter freundii, Proteus vulgaris and Enterobacter cloacae on the detection of salmonellae on BGA medium. The presence of the microflora did not influence salmonellae detection in RV and MK media. Among the three media tested RV medium proved to be most selective. It was more toxic for the accompanying microflora and reduced the number of bacteria used in the form of inoculum. The author concluded that RV medium was a god selective medium in which salmonellae grew well.