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Catalog Number | Format | Yield |
---|---|---|
DB0895V | Dry-Bags, without filter | 20L |
DB0895L | Dry-Bags™, with filter | 20L |
Use Half Fraser Broth as a secondary selective diagnostic enrichment medium for the isolation of Listeria spp. from food and environmental specimens. Fraser Broth is a modification of the USDA-FSIS UVM secondary enrichment broth and is based on the formula described by Fraser and Sperber. Blackening of the medium is presumptive evidence of the presence of Listeria. All Fraser Broth enrichment cultures should be subcultured to plating medium.
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Re-hydrated Dry-Bags medium can be stored for 3 days at room temp (away from strong light sources) and are available with filters attached for convenience or without filters as a lower-cost option. For those Dry-Bags supplied without filters, autoclavable, reusable filters are also available (DB0200A). For added convenience, it is recommended that the Dry-Bags be filled using the Thermo Scientific Peristaltic Pump (DB2000A or DB3000A) and dispensed using the Thermo Scientific Automated Diluter (DB4000A).
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