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1.01865

Readybag® Half Fraser Broth with Supplements

acc. ISO 11290, 62 g, irradiated, For the primary selective enrichment of Listeria sp.

Synonym(s):

Demi Fraser broth, Fraser broth primary enrichment, Fraser Broth, Fraser Listeria selective enrichment Broth

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About This Item

NACRES:
NA.74
UNSPSC Code:
41106212
Technical Service
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Quality Segment

200

agency

APHA, ISO 11133, ISO 11290

form

medium granules (dehydrated (DCM))

manufacturer/tradename

ReadyBag®

technique(s)

microbiological culture: suitable

pH

7.0-7.4 (25 °C, 55 g/L in H2O)

solubility

55 g/L

application(s)

food and beverages
microbiology
pathogen testing

storage temp.

15-25°C

suitability

Listeria spp.

General description

Half FRASER (Demi FRASER) broth has high nutrient content and the large buffer capacity that creates optimum growth conditions for Listeria. Lithium chloride, nalidixic acid, and acriflavine hydrochloride largely inhibit the growth of accompanying bacteria. Esculin and ammonium iron (III) citrate enables the detection of the β-D-glucosidase activity by the formation of a black complex of esculetin with iron (III) ions. However, this reaction is not exclusive to Listeria sp. and hence every primary and secondary enrichment in FRASER broth has to be sub-cultured on selective plating media.

Application

Half FRASER (Demi FRASER) broth with supplements is used for the primary selective enrichment of Listeria sp. from food and animal feed as well as from environmental samples and other materials.

Legal Information

READYBAG is a registered trademark of Merck KGaA, Darmstadt, Germany

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Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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