Streptokokken-Selektivagar (SESA)

Shorthand symbol: SESA
Item number: 40-1507
Format: Petri Dish, 90mm
Colour: Blood-red, opaque
Storage conditions: Dry, in closed bag at 4 – 10°C.
Shelf-life: 2 Months
pH: 7.3 ± 0.2 at 25°C
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Intented use and fields of application

Streptococcus Selective Agar allows the isolation of Streptococci species and Enterococci species from clinical materials and foods.

Typical composition in g/l

in g per 1l Medium
Casein peptone15.0
Soya peptone5.0
Sodium chloride5.0
Ammonium Iron (III) citrate0.5
Oxalic acid0.005
Neomycin sulphate0.02
Sheep blood (in ml)50.0
*Adjusted as required to meet performance standards

Microbiological quality control

The Microbiological Performance Test is carried out in accordance with the following specification:


Incubation Conditions: 24 ± 4 hours at 36 ± 2 °C; Inoculum concentration of Target Organisms: 80 – 120 CFU

OrganismType StrainSpecificationColony morphology
Streptococcus pyogenesATCC 1234450–130 %Small, grey colonies with significant hydrolysis
Enterococcus faecalisATCC 19433/WDCM 0000950–130 %Small, grey colonies with blackening of the agar media around the colonies


Incubation conditions: 24±4 hours at 36±2°C; Inoculum concentration: Target organisms: 10.000–1.000.000 CFU

OrganismType StrainSpecificationColony morphology
Escherichia coliATCC 8739/WDCM 00012Complete or partial inhibition-
Staphylococcus aureusATCC 6538/WDCM 00032Complete or partial inhibition-

Microbial Contamination
Incubation conditions: 5–7 days at 20–25°C and 5–7 days at 30–35 °C

No microbial contamination

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