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Merck
CN

67438

C. perfringens Millichrome™ plus Agar Base

selective for bacteria: Clostridium perfringens, suitable for microbiology

别名:

C. perfringens Chromogenic Agar Base, C. perfringens Differential Agar Base, C. perfringens Selective Agar Base

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NACRES:
NA.74
UNSPSC Code:
41161501

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agency

EP, JP

sterilization compatibility

autoclavable compatible

form

dry powder

shelf life

limited shelf life, expiry date on the label

composition

Agar, 15.0 g/L , Chromogenic and Selective mix, 1.4 g/L , Peptones and yeast
extract, 25.0 g/L , Salts, 6.0 g/L

manufacturer/tradename

MilliChrome™

technique(s)

microbiological culture: suitable

final pH

7.6±0.2 (25 °C)

solubility

deionized water: 50.9 g/L

application(s)

food and beverages
pharmaceutical
water monitoring, microbiology

shipped in

ambient

storage temp.

15-25°C

suitability

selective for bacteria: Clostridium perfringens

Quality Level

200

相关类别

General description

C. perfringens Millichrome™ plus Agar Base is a selective chromogenic medium used for the detection and enumeration of Clostridium perfringens. The medium contains peptones and yeast extract that provide nitrogenous nutrients for growth, sodium chloride for osmotic balance, chromogenic substrates for color differentiation, and selective agents to inhibit the growth of other organisms. The medium also contains some special growth factors for the growth of C. perfringens, and agar as the solidifying agent.

Application

C. perfringens Millichrome™ plus Agar Base is suitable for the detection and enumeration of Clostridium perfringens.

Preparation Note

  • Store prepared media below 8°C, protected from direct light (max. 1 month).
  • Store dehydrated powder, in a dry place, in tightly sealed containers at 2-25°C.
Step 1 (Preparation of the base C. perfringens Millichrome™ plus Agar Base)

  • Disperse slowly 50.9 g of powder base in 1 L of purified water.
  • Stir until agar is well thickened.
  • Heat and bring to boiling (100 °C) while swirling or stirring regularly.
  • AUTOCLAVE at 121 °C during 15 min.
  • Mix when removing it from the autoclave.
  • Cool in a water bath to 45/50 °C, swirling or stirring gently.
Step 2 (Preparation of the Supplement 1)
  • In a transparent vessel, add 2 g of C. perfringens Millichrome™ plus Agar Base supplement 1 in 20 mL of purified water.
  • Swirl well until complete dissolution.
  • Filter to sterilize at 0.45 μm.
Step 3 (Preparation of the Supplement 2)
  • Add 0.12 g of C. perfringens Millichrome™ plus Agar Base supplement 2 in 1 mL of purified water.
  • Filter to sterilize at 0.45 μm
Step 4 (Mixing of the prepared base and the supplements 1 and 2)
  • Add 20 mL/L of the supplement 1 solution to the melted base at 45/50 °C.
  • Add 1 mL/L of the supplement 2 solution to the melted base at 45/50 °C.
  • Swirl or stir gently to homogenize.
  • Pour into sterile Petri dishes
  • Let it solidify and dry.

Analysis Note

The medium is specific for C. perfringens and can differentiate it from other organisms based on the orange color of the colonies.

Legal Information

MilliChrome is a trademark of Merck KGaA, Darmstadt, Germany

存储类别

11 - Combustible Solids

wgk

WGK 3

法规信息

监管及禁止进口产品
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历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCJ8050

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商品

Microbial Detection Using Chromogenic and Fluorogenic Culture Media

Selective media enable faster results and visual confirmation for the detection, identification, and enumeration of microorganisms

相关内容

Data Sheet - 67438

67438 C. perfringens Millichrome™ plus Agar Base

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