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MXSMCMC24 Millipore

Milliflex Cassette prefilled with MacConkey Agar

Medium designed to detect Lactose fermenting organisms that will appear red; non-lactose fermenters will appear as colorless to white colonies.

  •  eCl@ss 32160801

  •  NACRES NA.74



Related Categories Microbiological Culture Media, Microbiology, Ready Media - Plates More...
Quality Level   300
form   plate (pre-poured agar)
shelf life   12 mo.
feature   ready-to-use
packaging   cassette of 10 mL
  pack of 24 tests
mfr. no.   Milliflex®
application(s)   bioburden testing: suitable
  microbiology: suitable
  water monitoring: suitable
color   clear dark red
input   sample type cosmetics
sample type beer
sample type bottled water
sample type pharmaceutical(s)
pH   7.1±0.2 (25.0 °C)
Featured Industry   Cosmetics
compatibility   for use with Milliflex®
shipped in   ambient
suitability   coliforms
  lactose-fermenting bacteria
storage conditions   Right side up.
  2 to 8 °C


General description

Milliflex® Cassette are ready to use agar-based media to be used with Milliflex® or Milliflex Oasis® system for convenient, rapid and reliable bioburden testing. The prefilled agar cassette helps to streamline the microbial contamination testing workflow with quality assurance and avoiding risks of exogenous contamination. Each plate is a 3-piece assembly containing approximately 10ml of the media. MacConkey Agar is a selective medium for isolation of coliforms and E. coli. Bile salts and crystal violet present in the media largely inhibit the growth of the gram-positive microbial flora. Lactose and the pH indicator neutral red are used to detect lactose degradation. It is useful in differentiating between the lactose fermenting and non-lactose fermenting bacteria and also aid in isolation of gram-negative bacteria.


Milliflex® Cassette prefilled with MacConkey Agar is used in Bioburden testing water monitoring. and general microbiological analysis. It is widely used in pharmaceutical and cosmetic industry


24 ea in 10 mL Agar in plastic Cassette


Standard Methods for the Examination of Water and Wastewater, United-States Pharmacopeia, European Pharmacopeia

Culture Medium


Analysis Note

Lactose fermenting organisms will appear red with or without a zone of precipitated bile. Non-lactose fermenters will appear as colorless to white colonies. Crystal violet and bile salts inhibits Gram-positive microorganisms, especially Enterococci and Staphylococci

QC organisms
E. coli (ATCC 25922)

P. mirabilis (ATCC 12453)

S. aureus (ATCC 6538) as negative control

Target Microorganisms: Lactose fermenting bacteria and coliforms

Legal Information

MILLIFLEX OASIS is a registered trademark of Merck KGaA, Darmstadt, Germany

MILLIFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety & Documentation

Safety Information

WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


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