Mérieux NutriSciences is the food industry’s leading microbiology testing partner. Our microbiologists apply their expert understanding of food matrices and regulatory requirements to perform tests according to standards set by APHA, AFNOR, AOAC, FDA, ISO, and USDA. Our food testing labs can also perform analyses according to client-specific standards as required.

Our food testing labs can help you to isolate and identify common indicator organisms and foodborne pathogens, analyze raw ingredient samples and finished products to guarantee the quality and safety of your food products. Bacterial identification and foodborne illness investigations are just a few of the additional services we provide. We can even arrange convenient and secure pickup of your samples.

Our highly specialized food testing labs perform microbiological tests in all matrices, including:

  • Meat
  • Fish
  • Dairy
  • Water
  • Beverages
  • Fruit and vegetables
  • Cereals and nuts
  • Ingredients and additives
  • Animal feed
  • Finished products
  • Food contact material

We also perform a variety of swab tests with our environmental monitoring services to guarantee the safety and hygiene of your production environment.

Our international network of ISO accredited food testing laboratories conform to the most stringent industry standards to ensure the integrity of your data. 

Mérieux NutriSciences' Food Science Center, located at our flagship laboratory in Crete, IL., offers a full portfolio of research services to help ensure product stability, quality, and safety - from concept development to retail shelf. The Food Science Center is equipped with cutting-edge technologies, state-of-the-art testing methods and innovative solutions to get your product and process to market faster. Learn more about the Food Science Center and watch this short video.


Indicator and Pathogen Testing

Mérieux NutriSciences’ microbiology testing portfolio includes analytical services to detect common indicators, pathogenic microbes and their toxins or organisms causing decay such as yeasts and molds.

Our full range of microbiological testing enables you to guarantee the quality of your food products by ensuring they are free of spoilage organisms or pathogens.

Indicator Microorganisms   

  • Acid-resistant microorganisms
  • Fecal contamination indicators
  • Heat-resistant microorganisms
  • Psychrotrophic microorganisms
  • Spore-forming microorganisms

Pathogens and Toxins

  • Listeria monocytogenes
  • Salmonella
  • Legionella pneumophila
  • Escherichia coli  STEC including O157
  • Vibrio spp.
  • Clostridium perfringens
  • Bacillus cereus
  • Cronobacter spp (Enterobacter sakazakii)
  • Campylobacter
  • Enterotoxins
  • Staphylococcus aureus

Industrial Microorganism Testing

Our recognized expertise in industrial microorganism testing can help you control quality and safety at different stages of product development.

The enumeration of specific bacterial species can be carried out on isolated species or complex floras. Counting techniques used in our laboratories involve both reference methods (ISO and IDF) and internally validated methods for those bacterial species for which there is no official reference method.

Some of our most commonly requested microorganism tests include:

  • Bifidobacteria
  • Lactobacillus delbrueckii subsp. Bulgaricus
  • Lactobacillus casei
  • Lactobacillus rhamnosus
  • Lactobacillus acidophilus
  • Streptococcus thermophilus
  • Saccharomyces cerevisiae

Virus Testing and Identification Services

Microbiological challenge testing is a useful tool for determining the ability of a food to support the growth of spoilage organisms or pathogens. 

Challenge testing helps you simulate what could happen to a product during production, processing, distribution or subsequent handling by consumers.  It is also an essential tool in the development of new formulations or products.

Why perform a challenge test?

  • To determine if certain spoilage organisms or pathogens can develop in a particular food or food product
  • To determine shelf life under various storage conditions
  • To study the effectiveness of a preservative or determine the presence of certain concentrations of a preservative
  • To ensure compliance with food safety regulations which require manufacturers to conduct such studies in certain foods, particularly packaged and ready-to-eat foods with the potential for Listeria, Salmonella and other pathogens

Find out more about the Challenge Studies performed by Mérieux NutriSciences Contract Research Services.

Microbial Identification Services

Our microbial identification services will provide you with an organism name, which can aid you in understanding the next steps you need to take in your plant. This will help you offset economic losses by elusive food organisms and decrease costly incidences of contamination. 

Learn more about Micro ID Services 

Latest News
June 2nd, 2020
CHICAGO, June 2, 2020 /PRNewswire/ -- Mérieux NutriSciences, a world leader in Food Safety and Quality, announces today the acquisition of Chestnut Labs, a value-added food safety solutions provider, ...
June 2nd, 2020
CHICAGO, June 2, 2020 /PRNewswire/ -- Mérieux NutriSciences, a world leader in Food Safety and Quality, announces today the acquisition of Chestnut Labs, a value-added food safety solutions provider, ...