A modification of UVM11 Medium, Fraser Broth Half-Strength is a primary selective enrichment broth for the isolation of Listeria spp. from food and environmental samples and is generally used in conjunction with Fraser Broth (BM0640). Although the base is identical to Fraser Broth it differs in that it contains only half the quantity of selective agents (Nalidixic acid and Acriflavine).
Fraser Broth (½ Strength)
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Product Description
| Organisms | Ref. No | Result |
| Listeria monocytogenes | NCTC 11994 | Growth (Darkening of Medium) |
| Listeria monocytogenes | NCTC 7973 | Growth (Darkening of Medium) |
| Enterococcus faecalis | NCTC 12697 | Inhibited |
| Escherichia coli | NCTC 12241 | Inhibited |
