One hundred and nineteen strains of Salmonella sp. belonging to 26 serovars were tested on Rambach’s agar. Only 65 per cent of the strains under study produced characteristic red colonies. The other strains could not be distiguished from Enterobacteriaceae because of the atypical colour of the colonies. No strains belonging to the S. choleraesuis, S. pullorum or S. gallinarum serovars were found, which could develop red pigmented colonies on Rambach’s agar. The detection of lactose-positive strains of Salmonella sp. was not possible because such bacteria produced blue- -violet colonies. A final assessment of the medium needs further examinations including fresh isolates.
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