For detection and isolation of Salmonella species including lactose positive Salmonella.

Detection of lactose positive Salmonella is required in food microbiology by the ISO 6579-1 standard.

• Salmonella (including S. typhi, S. paratyphi A and lactose positive Salmonella) → mauve
• E. coli → colourless
• Coliforms, etc → blue
• Proteus, etc → colourless or inhibited