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Ships within 48 hours · Estimated delivery Jul 6 - Jul 11
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Description
Fraser BrothFraser Broth Fraser Broth Base is a liquid medium used for the selective enrichment of Listeria spp. This broth was first described by Fraser and Sperber, and is utilized with a Ferric Ammonium Citrate supplement for the rapid detection of Listeria from food and environmental samples. Tryptose, Beef Extract, and Yeast Extract provide nutrients like amino acids, peptides, carbohydrates, and vitamins for bacterial growth. Esculin is the main energy
Fraser Broth
Fraser Broth Base is a liquid medium used for the selective enrichment of Listeria spp. This broth was first described by Fraser and Sperber, and is utilized with a Ferric Ammonium Citrate supplement for the rapid detection of Listeria from food and environmental samples. Tryptose, Beef Extract, and Yeast Extract provide nutrients like amino acids, peptides, carbohydrates, and vitamins for bacterial growth. Esculin is the main energy source. Sodium Chloride provides essential electrolytes and maintains osmotic equilibrium. Disodium Phosphate and Monopotassium Phosphate act as pH buffers. Lithium Chloride, Nalidixic Acid, and Acriflavine are selective agents for Listeria growth. All members of the Listeria spp. hydrolyze Esculin to 6,7-dihydroxycoumarine. This compound reacts with Ferric Ammonium Citrate, thus resulting in the blackening of the medium. There is a choice of 3 sizes - 500g, 2kg, and 10kg.
PREPARATION: Mix 55 grams of the medium in one liter of purified water until evenly dispersed. Distribute and autoclave at 121°C for 15 minutes. Cool to room temperature. Aseptically add 10mL of Fraser Broth Supplement.
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4.4 ★★★★★
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Product Reviews
★★★★★ 5
Super cute and great quality!
Super cute!!! Of course I bought it and my pug had zero interest in it, but it would be perfect for a bougie photo shoot
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026
★★★★★ 4
Will probably be destroyed soon, but SUPER CUTE!
Color: Pink Purse, Size: One Size
Super cute! It will probably eventually be ripped to shreds by my pups soon because it is not as sturdy as other toys out there. It is also pretty small so not the best for large dogs destructive dogs. My lab tries to eat it and rip it but my small chihuahua plays with it and fetches it (she also looks adorable holding it her mouth!!)
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Reviewed in the United States on January 5, 2017
★★★★★ 5
Adorable
Color: Pink Bone, Size: One Size
This is super cute, our small 2 pound pup plays with it often.
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Puppy toy
Color: Pink "Tie Me In Knots" Shoe, Size: Small
Cute and small, perfect for a tiny puppy.
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Reviewed in the United States on April 18, 2026
★★★★★ 5
Cute gift for a dog!
Stylish!
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Reviewed in the United States on May 19, 2026
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