Our Company

A Leader in Innovation

CHROMagar Microbiology was incorporated in 1993 by inventor, and pioneer in chromogenic media technology, Alain Rambach. Established in the heart of Paris (France), not far from the famous Pasteur Institute where Dr. Rambach began his research career, CHROMagar provides innovative chromogenic culture media solutions, designed to improve and simplify traditional culture techniques.
CHROMagar is at the cutting edge of a diagnostic field that developed out of Dr. Rambach’s pioneering research in the late 1970’s.

Today, CHROMagar supplies the widest range of chromogenic culture media available, covering applications in clinical bacteriology, industrial microbiology, quality control for food and beverage industries, water testing and environmental monitoring… among other fields. These media allow for a quicker and simpler detection of key clinical and food-borne pathogens, including Salmonella, Staph aureus, Candida albicans, E. coli O157, Group B Strep, E. coli, Listeria, Vibrio and Pseudomonas.


Research-driven and high-tech, CHROMagar consists of a select team of highly-trained scientists and technicians led by its founder Dr. Rambach. A leader in the innovative field of chromogenic culture media technology, CHROMagar is a commercially successful and growing enterprise with efficient international reach through its worldwide distribution network.

CHROMagar Major Strengths

  • 40 years experience, specialization and know-how
    A pioneer and specialist in chromogenic culture media technology, CHROMagar has been exploring both clinical and industrial microbial applications for 40 years.
  • Innovation and research, at the heart of its activity
    CHROMagar is fully committed to research with more than 50% of its human ressources involved in research. CHROMagar’s mission is to find detection solutions for today’s infection control challenges such as those posed by multi-resistance bacteria.
  • Worldwide recognition and an international distribution network
    Dr. Rambach is well known in the microbiology community for his inventions. Meanwhile, renowned international scientists have studied the performance of CHROMagar media. These studies have heightened awareness of CHROMagar’s technology and are available online.
    To consult these studies/papers, please click here.

Our Quality Control Policy

  • ISO Certification

As a guarantee of its high standards, CHROMagar is certified ISO 13485:2016. ISO certification demonstrates and guarantees CHROMagar’s ability to supply its clients with products that are of high quality and traceable, and in conformity with legal and regulatory requirements. 

Through its ISO 13485 certification, CHROMagar meets rigorous quality standards for products involved in medical processes. CHROMagar’s commitment to quality control improves the company processes with a view to complete client satisfaction.


Click on the logo above to download the certificate

  • CEE Regulations

All CHROMagar products designed for clinical applications are CE marked, assuring the highest possible quality standards for production processes as well as uniform product information (for labels and technical documents).


In keeping with CHROMagar’s quality management approach and transparency policy, our clients can easily access our complete product inserts and technical documents in the Technical documents section of our website.

These documents include:
- Certificates of analysis.
- Material safety data sheets.
- Instruction for use / Insert Notice. 

CHROMagar Products

What kind of bacteria are you trying to detect?
CHROMagar products have chromogenic media solutions in clinical, water-related and industrial fields!                      

Our entire range of products is available worldwide through more than 90 distributors located on every continent. To locate the distributor closest to you, please visit our “Contact” section. 

CHROMagarTM products are sold in dehydrated form in the following sizes: Qsf 5 L, Qsf 25 L.
QSF stands for “Quantity of powder sufficient for X liters of media”. A QSF 1 liter pack can prepare approximately 50 plates of media. Bulk sizes are also available upon request.

Depending on the product size, you will see on our labels:

               5000 mL                                    25 L                 


From our powder, CHROMagarTM chromogenic plates are easy to prepare.

Just add water to the powder, bring to a boil, let it cool down and pour! Use the entire pack or, if there is a need for a smaller number of plates, just a portion.


If kept under appropriate storage temperatures, CHROMagar powder products have a long shelf life (2 or 3 years). This flexibility is essential to avoid the costly-waste resulting from unused plates.


           Just mix powder...             obtain Ready to use plates whenever needed!      non contractual Pictures


For better security and to avoid product alteration during transport, CHROMagar equips the bottle packs with secured tamper-evident screw caps with wads. 

To provide our clients with full access to essential information, complete Instruction for Use (IFU) and technical documents are available for download on our website. As indicated on our Contact page, prepared media plates made with CHROMagarTM powder are available in several countries under COLOREXTM and RambaCHROMTM trademarks.

CHROMagarTM Culture Media Applications 

Discover some of the applications of CHROMagarTM Culture Media in the following publications from the Clinical Microbiology Newsletter

Manufacturer: CHROMagar 4, place du 18 Juin 1940,F-75006 Paris, France - CHROMagar@CHROMagar.com 
S.A.S. Capital 165.000 €uros,, R.C.S. Paris B 391 293 834, CEE n° FR27 391 293 834. 
Webmaster : A.Lerner.  Site hébergé chez : SAS OVH http:/www.ovh.com, OVH, 2 rue Kellermann BP80157 59100 Roubaix.

40 years of Experience

Download our general brochure in one click !

 First Chromogenic Media patented

RambachTM  Agar
Already commercially available in 1989

CHROMagarTM E.coli


CHROMagarTM Salmonella

CHROMagarTM Orientation

CHROMagarTM Candida

CHROMagarTM O157


CHROMagarTM Salmonella Plus

CHROMagarTM Pseudomonas

CHROMagarTM Vibrio

CHROMagarTM Listeria

CHROMagarTM Identification Listeria


CHROMagarTM StrepB