E. coli / Coliform supplement is a mixture of two antibiotics in lyophilized form. Vancomycin inhibits the growth of Gram-positive bacteria. Cefsulodin suppresses the growth of Pseudomonas spp. and Aeromonas spp. This selective supplement can be used in combination with most E. coli / Coliform enrichment media and plating agars.

Supplement tested in Chromocult Coliform agar art. no. 1.10426.

Recovery on test medium

- Escherichia coli DSM 502:

≥ 70 %

- Citrobacter freundii ATCC 8090: ≥ 70 %

Growth

- Aeromonas hydrophila ATCC 7966 (WDCM 00063):

inhibited

- Pseudomonas aeruginosa ATCC 27853 (WDCM 00025): inhibited

- Bacillus licheniformis ATCC 14580 (WDCM 00068): inhibited

- Staphylococcus aureus ATCC 6538 (WDCM 00032): inhibited

Colony colour

- Escherichia coli DSM 502:

blue

- Citrobacter freundii ATCC 8090: red

Incubation: 24 hrs.; 35 °C; aerobic.