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MilliporeSigma

MHA000P2E

m-Endo Total Coliform Broth

ampoule capacity 2 mL, ampoule filling volume 2 mL, ready-to-use, pack of 50 tests, for coliforms

Synonym(s):

MF Endo Medium, m-Coliform Broth

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50

$130.00

$130.00


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About This Item

UNSPSC Code:
41106225
NACRES:
NA.74
eCl@ss:
32160801
Bottle capacity:
2 mL
Feature:
ready-to-use
Ph:
7.2±0.2 (25.0 °C)

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sterility

sterile

form

liquid

shelf life

12 mo.

feature

ready-to-use

packaging

pack of 50 tests

ampoule capacity

2 mL

ampoule filling volume

2 mL

bottle capacity

2 mL

color

pink to light purple, with slight precipitate

input

sample type wine
sample type cosmetics
sample type food(s)
sample type beverage(s)
sample type cider
sample type sport drink
sample type bottled water
sample type soft drink
sample type beer

pH

7.2±0.2 (25.0 °C)

Quality Level

compatibility

for use with MF-method, for use with EZ-Fit® Filtration Manifold, for use with MicropreSure®, for use with Milliflex®

application(s)

bioburden testing
clinical
cosmetics
environmental
food and beverages
industrial qc
microbiology
water monitoring

shipped in

wet ice

storage temp.

2-8°C

suitability

Escherichia spp., coliforms

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This Item
17162MB000000EM00PMCB24
feature

ready-to-use

feature

-

feature

-

feature

ready-to-use

form

liquid

form

powder

form

powder (dehydrated)

form

liquid

packaging

pack of 50 tests

packaging

-

packaging

pkg of 110 g

packaging

pack of 50 tests

application(s)

bioburden testing
clinical
cosmetics
environmental
food and beverages
industrial qc
water monitoring, microbiology

application(s)

agriculture
environmental
food and beverages
water monitoring, microbiology

application(s)

clinical
cosmetics
environmental
food and beverages
industrial qc
microbiology
water monitoring

application(s)

bioburden testing
clinical
cosmetics
environmental
food and beverages
industrial qc
water monitoring, microbiology

suitability

Escherichia spp., coliforms

suitability

selective for Escherichia coli, selective for coliforms

suitability

coliforms

suitability

Escherichia spp., coliforms

pH

7.2±0.2 (25.0 °C)

pH

-

pH

7.2±0.1 (25.0 °C)

pH

7.0±0.2 (25.0 °C)

General description

m-Endo Total Coliform Broth is a selective and differential medium used to estimate the coliform bacteria in water samples by membrane filtration technique. The medium enables differentiation between lactose fermenters and non-fermenters. The use of sodium sulfite and basic fuchsin instead of bile salts inhibits the growth of Gram-positive bacteria. Lactose fermenting bacteria produce acetaldehyde that reacts with the sodium sulfite and fuchsin to form red colonies. The rapid fermentation of lactose by the organisms produces aldehydes, which leads to the development of a metallic sheen. Lactose non-fermenters form colorless colonies.

Application

m-Endo Total Coliform Broth is suitable for Total coliform detection in water samples. The media enables to differentiate between lactose fermenters from lactose non-fermenters.

Features and Benefits

  • Ready-to-use Liquid ampoule media solve numerous problems in microbiology laboratories where time, equipment, and trained personnel are often in short supply.
  • They are available in convenient, single-test 2 mL plastic ampoules, eliminating the manipulation of glass ampoules and avoiding the waste and spoilage associated with bulk packaged media.
Incubation Temperature: 35 °C ± 0.5
Incubation Time: 24 hrs ± 2
Standard Methods for the Examination of Water and Wastewater

Analysis Note

Coliform colonies appear deep red with distinct green metallic sheen
QC organisms
E. coli (ATCC 25922)

Mixed culture (E. coli, P. aeruginosa and P. vulgaris)
Target Microorganisms: Total coliforms

Legal Information

EZ-FIT is a registered trademark of Merck KGaA, Darmstadt, Germany
MICROPRESURE is a registered trademark of Merck KGaA, Darmstadt, Germany
MILLIFLEX is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

12 - Non Combustible Liquids


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Manafi M
Handbook of Culture Media for Food and Water Microbiology, 50(2), 233-233 (2011)
Improved membrane filter medium for the detection of coliform organisms
J. Amer. Water Works Assoc., 50(2), 193-196 (1958)

Questions

  1. Hello. When culturing on Endo Total Coliform Broth: If a colony grows with a metallic sheen and no obvious color change on MacConkey broth (Mannitol A+ G+), does this confirm E. coli?

    1 answer
    1. In the context of culturing on Endo Total Coliform Broth, if a colony grows red without a metallic sheen and does not react on MacConkey medium, it is unlikely to be a true coliform. Coliforms typically produce a metallic sheen on Endo agar and ferment lactose on MacConkey agar, leading to pink colonies.

      To confirm whether the organism is a coliform or not, you can perform the following confirmatory tests:

      Lactose Fermentation Test: Inoculate a lactose broth and check for gas production and acid production after incubation. Coliforms will typically ferment lactose, producing gas.

      Indole Test: Some coliforms, like Escherichia coli, are indole positive. Use tryptone broth and check for indole production.

      Citrate Utilization Test: Determine if the organism can utilize citrate as its sole carbon source. Most coliforms cannot.

      Methyl Red Test: This test checks for mixed acid fermentation. Coliforms typically show a positive result.

      Voges-Proskauer Test: This test checks for acetoin production. Most coliforms are negative.

      Coliform chromogenic agar: On CCA, coliforms grow as pink to red colonies, and E. coli produces dark-blue to violet color.

      Helpful?

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