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Description:
GN Broth (Gram Negative Broth) is an enrichment and selective medium for enterobacteria, with a stron g inhibitory action against Gram positive bacteria because of its high content of citrate and deoxycholate. Mannitol restrains the growth of Proteus and facilitates the proliferation of Salmonella and Shigella. The medium is strongly recommended for primary enrichment, (14- 16 hours), before proceeding to selective media such as EMB (Art. No. 01-068) or MacConkey (Art. No. 01-118). Its author, Hajna, declares an extraordinary selectivity of the medium, whatever the origin of the sample, if it is kept in a transport medium prior to inoculation.
Specification:
250g