Listeria monocytogenes Chromogenic Media

Detection & enumeration of Listeria monocytogenes

  • Most complete range of Listeria solutions on the market
  • Internationally validated methods
  • Easy protocols (bag – plate)
Add to my selection

Do you need more information

bioMerieux has developed a complete offer with 2 complementary culture media to perform all your Listeria monocytogenes analysis.

Listeria monocytogenes and isteria spp detection with chromogenic culture media


ALOA® : One media, many solutions

The ALOA® range offers a variety of validated methods to perform detection, enumeration and confirmation of Listeria monocytogenes.

    ALOA® One Day enables detection of Listeria monocytogenes within 48 hours (enrichment included) in food and environmental samples

    • One day results after enrichment for negative and confirmed positive samples
    • Easy protocol: 1 bag – 1 plate
    • Flexibility & workflow optimization: broth bags and plates can be held at +2°C to +8°C for up to 72 hours after incubation
    • International validations (ISO 16140 / AOAC RI)

    ALOA® Count method was designed for the enumeration of Listeria monocytogenes in food and environmental products

    • Time to results 48 hours on ALOA plate
    • Easy protocol: One plate per dilution
    • Flexible and cost-effective:

    - ​Save one hour: optional resuscitation step
    - Optimize workflow: resuscitation in BPW or half fraser with antibiotics lets carry out detection and enumeration from the same suspension
    - Plates can be held at +2°C to +8°C for up to 72 hours after incubation
    - For low numbers < 10 CFU/g, several possibilities:
    ​1 plate Ø90mm with pour plate method
    1 plate Ø140mm with spreading method
    3 plates Ø90 mm with spreading method

    Confirmation methods

    For the confirmation of these 2 methods, several validated solutions adapted to your release times:

    • Same Day:

    listeria monocytogenes rapid detection and enumeration​RAPIDEC® Lmono: positive from 4 h; negative in 6h
    Fast Rhamnose: cost effective confirmation; positive from 6hrs; negative in 24 hrslisteria monocytogenes detection and enumeration with VIDAS
    Accuprobe® L.mono

    • Next Day (24h):

    ​​ALOA® confirmation: ​Simple and cost-effective solution, Up to 6 confirmations per plate
    API® Listeria: confirmation & identification

    ALOA® is compliant with ISO 11290 reference methods (part 1 and 2) for detection and enumeration


    CHROMID® Lmono

    listeria monocytogenes detection and confirmation

    Our CHROMID® solution is designed for 2 specific applications:

    • Detection of L.mono in highly L.spp contaminated samples

    ​Short protocol (48h): one bag - one plate
    Easy-to-read thanks to a unique characteristic colour (blue colonies)

    • Enumeration of L.mono within 24 hours

    ​One-day result for confirmed L.mono enumeration
    Flexible & cost-effective:
    - Plates can be held at +2°C to +8°C for up to 72 hours after incubation
    - For low numbers < 10 CFU/g, several possibilities:
    ​1 plate Ø90mm with pour plate method
    2 plates Ø90 mm with spreading method

    broth and culture media for listeria monocytogenes detection and enumeration


    Other media for the detection and enumeration of Listeria monocytogenes

    Among other media, our range includes the Half-Fraser broth, in different formats:

    Bottles of 225 mL, Bags (3L, 5L), etc

    Listeria monocytogenes Detection

    Contact us for more detail on our solutions for Listeria detection

    Please consult our local company or representatives for the availability of these products in your country

    Pioneering diagnostics