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Thermo Scientific™ MacConkey Broth Purple (Dehydrated)

Detect coliform organisms in water and milk examination with this medium.

Brand:  Thermo Scientific™ CM0505B

102.06 EUR valid until 2025-07-13
Use promo code "24135" to get your promotional price.

Product Code. 10341433

  • 111.00 EUR / 500g

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Description

Description

Detect coliform organisms in water and milk examination with Thermo Scientific™ Oxoid™ MacConkey Broth Purple (Dehydrated). Bromocresol purple indicator in the medium provides more sensitive and definite indications of acid production as compared to neutral red indicator and is less inhibitory to Escherichia coli. The use of bromocresol purple corresponds to the alternative formulations recommended in The Bacteriological Examination of Water Supplies1 and International Standard for Drinking Water2.

MacConkey Broth has long been used as a presumptive medium for the detection of coli-aerogenes organisms. In the original medium, litmus was employed as the indicator of acid production but, in later publications, MacConkey suggested neutral red as a more satisfactory alternative. Childs & Allen1 showed that some samples of neutral red exerted an inhibitory effect on the growth of Escherichia coli in this medium.

Bromocresol purple is less inhibitory, and the color change from purple to yellow provides a more sensitive and definite indication of acid formation; therefore this indicator is used in MacConkey Broth Purple.

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Remel™ and Oxoid™ products are now part of the Thermo Scientific brand.

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Specifications

Specifications

MacConkey Broth Purple (U.S. formulation, CM5a)
Dehydrated Culture Media
For 12.5L medium
Powder
500 g
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Lot Number Certificate Type Date Catalog Number
Lot Number6216200 Certificate TypeCertificate of Analysis Date23/01/2025 Catalog NumberCM0505B
Lot Number6180200 Certificate TypeCertificate of Analysis Date28/11/2024 Catalog NumberCM0505B
Lot Number6143941 Certificate TypeCertificate of Analysis Date22/08/2024 Catalog NumberCM0505B
Lot Number3814277 Certificate TypeCertificate of Analysis Date17/05/2024 Catalog NumberCM0505B
Lot Number3794181 Certificate TypeCertificate of Analysis Date30/04/2024 Catalog NumberCM0505B
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