Home > Catalogo generale > Culture media and ISO confirmation tests > Bio-Rad AL Chromogenic Agar – Listeria detection and enumeration according to Ottaviani Agosti (ALOA) – One plate method AFNOR I

Bio-Rad AL Chromogenic Agar – Listeria detection and enumeration according to Ottaviani Agosti (ALOA) – One plate method AFNOR I

  • Brand: Bio-Rad
  • Format: 500 g
  • Code: BR3564043
  • Technology: Culture media and ISO confirmation tests
  • Application: Food/Water microbiology
  • Tag/Filter: Listeria

When Listeria gets into food, it often comes from environmental contamination. Finding sources of contamination by Listeria spp. in the processing plant is the first step towards preventing Listeria monocytogenes contamination of food. A proactive, aggressive environmental monitoring program is needed as a first step in preventing contamination. Like the famous ALOA medium, Bio-Rad AL Medium is based on the simultaneous detection of two enzyme activities (blue colonies are Listeria spp and an opaque halo identifies L. monocytogenes and L. ivanovii. It is available as ready-to-use agar plates, and agar bottles or dehydrated agar to be supplemented. Bio-Rad AL Medium specificity was tested on 50 strains of Listeria spp. and 30 strains of non-Listeria species and according to the AFNOR ISO16140 validation performed versus ISO11290 it offers a fundamental benefit – just ONE plate needed per sample.


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Bio-Rad AL Chromogenic Agar – Listeria detection and enumeration according to Ottaviani Agosti (ALOA) – One plate method AFNOR I
  • Brand: Bio-Rad
  • Format: 500 g
  • Code: BR3564043
  • Technology: Culture media and ISO confirmation tests
  • Application: Food/Water microbiology
  • Tag/Filter: Listeria


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