CP ChromoSelect Agar

suitable for microbiology, NutriSelect® Basic

Clostridium perfringens ChromoSelect Agar, Clostridium perfringens Chromogen Agar, CPC Agar

Quality Level





shelf life

limited shelf life, expiry date on the label


agar, 15.0 g/L
ammonium iron(III) citrate, 0.2 g/L
chromogenic mixture, 1.73 g/L
L-cysteine hydrochloride, 1.0 g/L
magnesiumsulfate heptahydrate, 0.1 g/L
soy peptone, 5.0 g/L
sucrose, 3.0 g/L
tris buffer, 1.8 g/L
tryptose (vegetable), 20.0 g/L
yeast extract, 15.0 g/L


NutriSelect® Basic


bioburden testing: suitable
microbiology: suitable (microbial identification)
water monitoring: suitable

final pH

7.4±0.2 (25 °C)

Featured Industry

Food and Beverages


selective and differential for Clostridium spp.

Related Categories


A chromogenic Agar for enumeration detection and differentiation of Clostridium sp., in particular Clostridium perfringens, in aqueous samples. The medium is more reliable than m-CP Agar and easier to handle.

Preparation Note

Suspend 31.42 g in 400 ml distilled water and adjust the volume to 500 ml. Boil to dissolve the medium completely. Cool to 50-55°C and add 1 vial of Perfringens T.S.C. Supplement (P9352) or 1 vials of M-CP selective Supplement I (Cat. No. 51962). Dispense into petri dishes (we recommend small ones).


We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.

Legal Information

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


11 - Combustible Solids

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

D P Sartory et al.
Letters in applied microbiology, 27(6), 323-327 (1999-01-01)
Two media (mCP medium and Tryptose Sulphite Cycloserine (TSC) agar) were evaluated for recovery of Clostridium perfringens in environmental and part-treated drinking water. For laboratory strains of Clostridium, mCP was more selective and specific for Cl. perfringens than TSC, but...
Epsilon toxin is essential for the virulence of Clostridium perfringens type D infection in sheep, goats, and mice.
Garcia JP
Infection and Immunity, 81 (7), 2405-2414 (2013)
Mammad Manafi et al.
International journal of food microbiology, 167(1), 92-95 (2013-07-03)
The European Directive on drinking water quality has included mCP agar as the reference method for recovering Clostridium perfringens from drinking waters. In the present study, three media (mCP, TSCF and CP Chromo Select Agar) were evaluated for recovery of...
An article regarding the Role of Clostridium perfringens and their detection, identification, and differentiation from Sigma-Aldrich.com
Read More
Selective media enable faster results and visual confirmation for the detection, identification, and enumeration of microorganisms
Read More

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