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Food Stamp Cereus Agar    Product

Simple and Easy Stamp Medium for Food Hygiene test: Bacillus cereus

Directions:
Food Stamp is a prepared agar medium for Stamp method, on which agar stands up slightly above the rim of special Petri dish of 10 cm² . Take off the cap of Food Stamp and gently press the medium against the surface of specimen. The surface of agar is elastic enough to be pressed firmly against the specimen. Press against the different parts of the specimen when several kinds of Food Stamps are tested simultaneously. Put the cap again
immediately after pressing.

Incubate at 37° C for 24 - 48 hours.

Interpretations:
Bacillus cereus forms white colonies with an irregular rim, which develop opaque zone
(positive egg yolk reaction) around the colonies and change the color of medium to Red.
Small colonies with negative egg yolk reaction are not B. cereus.




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