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ReadyPlateTM 55 Chromocult® Coliform Agar

品牌
Millipore
货号
1.46757
规格纯度
plate diam. 55 mm, for Escherichia coli, for coliforms, box of 20 plates
价格
372.22 *本价格含增值税费
促销
服务
  • 原厂保证
  • 包邮
  • 增值税票
数量
-+
产品名称:
ReadyPlateTM 55 Chromocult® Coliform Agar
产品介绍:

产品说明

一般描述

ReadyPlate 55 agar plates are stackable specially designed plates that helps increase the safety during handling, transport, incubation and comes in a lockable format. ReadyPlate 55 agar plates come with a diameter of 55 mm and the medium is filled perfectly on the top which allows easy handling (laying of the membrane) on the agar and prevents formation of air bubbles. Chromocult® Coliform Agar (CCA) is a selective and differential chromogenic culture medium used for the microbiological analysis of water samples. Within 24 hours this medium enables the simultaneous detection, differentiation and enumeration of E. coli and coliform bacteria in drinking water.

应用

Chromocult® Coliform Agar is used for the simultaneous detection of Escherichia coli and coliform bacteria in drinking water, disinfected pool water and finished water from treatment plants by membrane filtration method.

分析说明

The interaction of selected peptones, pyruvate, sorbitol and phosphate buffer promotes rapid colony growth, even for sub-lethally injured coliform bacteria. The growth of Gram-positive bacteria as well as certain Gram-negative bacteria is inhibited by the presence of Tergitol 7 which has no negative effect on the growth of coliform bacteria. Further, the combination of two chromogenic substrates permits the simultaneous detection of coliform bacteria and E. coli.
Coliform bacteria detection: The substrate Salmon-GAL is used for the detection of β-D-galactosidase activity, which is characteristic for coliform bacteria. This interaction results in a pink to red color of the coliform colonies.
E. coli detection: The substrate X-glucuronide is used for the detection of β-D-glucuronidase activity. E. coli cleaves both Salmon-GAL and X-glucuronide, so that positive colonies take on a dark-blue to violet color. These are easily distinguished from other coliform colonies, which have a pink to red color. Some E. coli (3-4%) are ß-D-glucuronidase-negative and appear as pink to red colonies.
Accompanying flora appears as colorless colonies, except for some organisms, which possess β-D glucuronidase activity. These colonies appear light blue to turquoise in color.

法律信息

CHROMOCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
READYPLATE is a trademark of Merck KGaA, Darmstadt, Germany
TERGITOL is a trademark of The Dow Chemical Company ("Dow") or an affiliated company of Dow

产品性质

质量水平300
agencyISO 9308
产品线ReadyPlate
形式plate
特点ready-to-use
包装box of 20 plates
板直径55 mm
application(s)bioburden testing
filtration
food and beverages
microbiology
储存温度15-25℃
适用性Escherichia coli
coliforms

安全信息

储存分类代码13 - Non Combustible Solids
WGKWGK 1
闪点(F)Not applicable
闪点(C)Not applicable

Sigma-Aldrich

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