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Merck
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主要文件

17215

Millipore

WL 鉴别琼脂

suitable for microbiology, NutriSelect® Plus

别名:

WLD 琼脂, Wallerstein 鉴别琼脂

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About This Item

分類程式碼代碼:
41171606
NACRES:
NA.74

無菌

non-sterile

品質等級

形狀

powder

儲存期限

limited shelf life, expiry date on the label

成份

actidione (cycloheximide), 0.004 g/L
agar, 20 g/L
bromocresol green, 0.022 g/L
calcium chloride, 0.125 g/L
casein enzymic hydrolysate, 5 g/L
dextrose, 50 g/L
ferric chloride, 0.0025 g/L
magnesium sulfate, 0.125 g/L
manganese sulfate, 0.0025 g/L
monopotassium phosphate, 0.55 g/L
potassium chloride, 0.425 g/L
yeast extract, 4 g/L

製造商/商標名

NutriSelect® Plus

技術

microbiological culture: suitable

最終pH值

5.5±0.2 (25 °C)

應用

bioburden testing
food and beverages

microbiology

適合性

selective and differential for Escherichia coli
selective and differential for Lactobacillus spp.
selective and differential for Proteus spp.
selective and differential for bacteria (General Media)
selective and differential for coliforms

一般說明

通过改良Green和Gray的配方配制的WL(Wallerstein Laboratory)鉴别琼脂,可用于检测酿造过程中的材料以及含有酵母和细菌混合菌群的工业发酵物。WL鉴别琼脂有助于选择性分离和计数啤酒厂和工业发酵中遇到的细菌。

應用

WL鉴别琼脂已用于马克斯克鲁维酵母培养基计数。

準備報告

将80.26 g悬浮于1L蒸馏水中。 加热至沸腾以完全溶解培养基。在121°C下高压蒸汽灭菌15分钟。如果需要得到6.5的pH值,添加1%碳酸氢钠溶液。

腳註

我们现提供两种类型的培养基:GranuCult®优质颗粒状培养基和NutriSelect®高性价比粉末状培养基,满足用户不同层次的需求。
商标后的品级称号basic(基础)、plus(加强)或prime(特级)代表产品的不同质控水平,从基础的质控到标准质控加强版到全面合规的特级质控水平。

法律資訊

GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

個人防護裝備

Eyeshields, Gloves, type N95 (US)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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A differential procedure for bacteriological studies useful in the fermentation industry
Green SR and Gray PP
Archives of Biochemistry and Biophysics, 32(1), 59-69 (1951)
Interactions between Kluyveromyces marxianus and Saccharomyces cerevisiae in tequila must type medium fermentation
Lopez CLF, et al.
World Journal of Microbiology & Biotechnology, 30(8), 2223-2229 (2014)

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