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Specifications

Growth promotion test according to ISO 11133.

Inoculum on reference medium

- Listeria monocytogenes ATCC 13932 (WDCM 00021)

10 - 100

- Listeria monocytogenes ATCC 19111 (WDCM 00020) 10 - 100

- Listeria innocua ATCC 33090 (WDCM 00017) 10 - 100

Recovery on test medium

- Listeria monocytogenes ATCC 13932 (WDCM 00021)

≥ 70 %

- Listeria monocytogenes ATCC 19111 (WDCM 00020) ≥ 70 %

- Listeria innocua ATCC 33090 (WDCM 00017) ≥ 70 %

Colonies

- Listeria monocytogenes ATCC 13932 (WDCM 00021)

blue-green; non-transparent zone

- Listeria monocytogenes ATCC 19111 (WDCM 00020) blue-green; non-transparent zone

- Listeria innocua ATCC 33090 (WDCM 00017) blue-green

Growth

- Escherichia coli ATCC 25922 (WDCM 00013)

no growth

- Escherichia coli ATCC 8739 (WDCM 00012) no growth

- Enterococcus faecalis ATCC 19433 (WDCM 00009) no growth

- Enterococcus faecalis ATCC 29212 (WDCM 00087) no growth