Food&Water Q.C.


CHROMagar™ Pseudomonas

Click on the picture for
Packaging / Colonies appearance

For isolation and detection of Pseudomonas spp.

Typical Appearance of microrganisms

Pseudomonas spp., including P. aeruginosa
→ blue-green
Most of Enterobacteriaceae
→ mauve to violet or inhibited
Gram + bacteria
→ inhibited

Order References 

Please use these references when
contacting your local distributor:
5000 mL............. PS832
25 L................... PS833-25
To download the certificate of analysis, please indicate your lot number below :


  1. Fast: 24 h incubation.

  2. A membrane filtration method can be used for detection from 100 mL of water, the inoculated membrane (polycarbonate filter) is placed, sample uppermost, on the agar plate.

  3. Simple to prepare: with CHROMagarTM Pseudomonas the pre-weighed agar powder is mixed with the required volume of distilled water.

  4. Easy to read: one unique intensified colour for Pseudomonas.

  5. Simple to use: colonies can be viewed under normal lighting conditions. Pseudomonas colonies develop an intense blue-green colony colour, clearly visible to the naked eye.

Medium Description

Gain flexibility using powder rather than ready to use plates: Use the entire pack, or just a portion if  a smaller number of plates is needed. If kept under appropriate storage temperature, CHROMagarTM Pseudomonas has a more than 18 months shelf life. This flexibility is essential to avoid the waste resulting from expired-unused plates. 

Please refer to our IFU and Material Safety data sheet for complete information about the medium. 
CHROMagar™, Rambach™, AquaCHROM™ are trademarks created by Dr. A. Rambach.
All pictures of our products are CHROMagar™ property and should not be used without our acceptance.
Last Update: 21-May-2019

Focus on Pseudomonas

Pseudomonas are ubiquitous bacteria found in the soil, on plants and in freshwater and marine habitats. Many strains can grow at low temperature (psychrophilic strains) and may contaminate food or pharmaceutical products stored in the refrigerator.

Pseudomonas Epidemiologic Issues

Food industry and environmental issues:
P. aeruginosa is a valid indicator allowing verification of recreational water disinfection efficacy. This parameter is currently used as a criterion in the regulation of wading and swimming pools. Moreover, the absence of P. aeruginosa is important not only in terms of its role as an indicator, but also because it is an opportunistic pathogen whose transmission is often associated with water.
Other forms of Pseudomonas bacteria are known to cause food spoilage at low temperatures. These psychrophillic Pseudomonas strains include: P. fragi, which causes spoilage of dairy products, P. taetrolens which causes mustiness in eggs and P. mudicolens and P. lundensis, which cause spoilage of milk, cheese, meat, and fish, but are rarely a cause of food poisoning.

No publication for this product.

more publications