Intended use:

Usage of Compact Dry EC is a simple and safe test procedure for determination and quantification of coliform bacteria and E. coli in foods, cosmetics, water or raw materials – as well as pharmaceutical raw materials. The plates consist of a special 50 mm diameter petri dish containing a detection specific nutrient pad.

The ready-to-use, chromogenic Compact Dry plates are suitable for in-process controls as well as controls of finished products. With the Promedia ST-25 swab tests (Art. No. Z0302, available from R-Biopharm) Compact Dry plates may also be used for surface sampling and therefore applied for quantitative hygiene monitoring even at surfaces which are difficult to reach.

General information:

The term “coliform bacteria” doesn’t describe a taxonomical group beyond the eubacteria. It actually is more a summary of some genera from the family of enterobacteria. Their common biochemical characteristics are positive lactose reaction as well as negative oxidase reaction. Coliform bacteria are considered to be indicators for fecal contaminations. E. coli is the best known member of the group of coliforms and considered as indicator for the presence of pathogenic organisms (e.g. Salmonella).

The nutrient medium of Compact Dry EC contains two chromogenic enzyme substrates: Magenta-Gal and X-Gluc. Thus coliforms show a red or red violet coloration of their colonies while colonies of E. coli will appear in blue. By addition of all red, red violet and blue colony counts the total number of coliform bacteria grown on the nutrient can be obtained.

Certificates:

  • MicroVal - Certificate No. MV0806-004LR
  • NordVal - Certificate No. 036
  • AOAC-RI - Certificate No. 110402
Specifications
Art. No. HS8781, HS8782
Test format 100 nutrient plates or 40 nutrient plates, respectively - – where four plates are packed in one aluminum bag
Incubation time 24 ± 2 h at 37 ± 1°C (MicroVal, NordVal) 35 ± 2°C (AOAC)
Files
InstructionsGerman/English/Spanish
French
Italian
Portuguese
SDSHS8781-HS8782_english.zip (English)
HS8781-HS8782_german.zip (German)
HS8781-HS8782_french.zip (French)
HS8781-HS8782_italian.zip (Italian)
HS8781-HS8782_spanish.zip (Spanish)
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Food microbiology testing_Compact Dry CF_blue colonies of coliform bacteriaFood microbiology testing_Compact Dry ETB_blank nutrient pad left_red colonies enterobacteriaceae+color change right