Intended use:

RIDA®STAMP Salmonella is a ready-to-use agar for the detection of Salmonella on surfaces. The RIDA®STAMP plates consist of a special 10 cm2 petri dish containing organism specific agar which is protruding above the surface of the plate in order to allow direct contact with the selected flat surface or solid food sample.

General Information:

Regular sampling on cleaned and sanitised surfaces will lead to a complete quantitative hygiene monitoring process. Repeated controls will play a part in contributing to good workplace hygiene according to the concept of HACCP and support GMP guidelines.

Especially in the production of food from animal origin it is most likely that Salmonella finds its way onto the surfaces during the processing of contaminated raw materials. Regular controls for the presence of Salmonella on the surfaces have to be added to the general hygiene testing to avoid contaminations of food stuff with potentially pathogenic organisms.

Differentiation of Salmonella on RIDA®STAMP Salmonella is based on Salmonellas characteristic to produce hydrogen sulfide during growth. As iron-(III)-ions are present in the agar; precipitates of iron sulfide are formed by the bacteria. The iron sulfide will turn the whole colonies black or build a black center in the colonies. Due to acid production the agar may change its colour from purple to yellow / beige.


  • Direct contact on flat surfaces.
  • Easy evaluation.
  • Space saving during storage, incubation and disposal.
  • Ready to use  ->  easy handling.
  • Long shelf life.
  • Robust agar plate system.


Article NumbersHS0392
Test format HS0392: 25 agar plates,
respectively 5 plates are packed in 1 plastic bag.
Sample preparation No sample preparation
Incubation time 24 - 48 hours at 36 ± 1°C
LOD (Detection limit) 1 cfu / 10 cm2
Detected analyte Salmonella = black colonies or build a black center in the colonies and the agar colour can change from purple to yellow beige.
Evaluation Visual counting
French (German) (English) (French) (Italian) (Spanish)
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