Merck
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69964

Millipore

MRS Agar

suitable for microbiology, NutriSelect® Basic

Synonym(s):
Lactobacillus Agar according to DeMan, Rogosa and Sharpe
NACRES:
NA.74

sterility

non-sterile

Quality Level

form

powder

shelf life

limited shelf life, expiry date on the label

composition

agar, 12 g/L
diammonium hydrogen citrate, 2 g/L
dipotassium hydrogen phosphate, 2 g/L
D(+)-glucose, 20 g/L
magnesium sulfate, 0.1 g/L
manganous sulfate, 0.05 g/L
meat extract, 5 g/L
sodium acetate, 5 g/L
universal peptone, 10 g/L
yeast extract, 5 g/L

manufacturer/tradename

NutriSelect® Basic

technique(s)

microbiological culture: suitable

final pH

6.5±0.2 (25 °C)

application(s)

agriculture
bioburden testing
environmental
food and beverages

microbiology

suitability

nonselective for Lactobacillus spp.
selective by low pH for Bifidobacterium spp.

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form

powder

form

powder

form

powder

form

powder

shelf life

limited shelf life, expiry date on the label

shelf life

limited shelf life, expiry date on the label

shelf life

limited shelf life, expiry date on the label

shelf life

limited shelf life, expiry date on the label

composition

agar, 12 g/L , diammonium hydrogen citrate, 2 g/L , dipotassium hydrogen phosphate, 2 g/L , D(+)-glucose, 20 g/L , magnesium sulfate, 0.1 g/L , manganous sulfate, 0.05 g/L , meat extract, 5 g/L , sodium acetate, 5 g/L , universal peptone, 10 g/L , yeast extract, 5 g/L

composition

agar, 15.0 g/L , ammonium citrate, 2.0 g/L , bromocresol green, 0.04 g/L , captan, 0.004 g/L , dextrose, 20.0 g/L , dipotassium phosphate, 2.0 g/L , magnesium sulfate, 0.1 g/L , manganese sulfate, 0.05 g/L , 2-phenylethyl alcohol, 3.0 g/L , proteose peptone (vegetable), 10.0 g/L , sodium acetate, 5.0 g/L , yeast extract, 5.0 g/L

composition

agar, 12.75 g/L , ascorbic acid, 0.5 g/L , casein peptone (tryptic), 2.5 g/L , disodium β-glycerophosphate pentahydrate, 19 g/L , magnesium sulfate hydrate, 0.25 g/L , meat extract, 5 g/L , meat peptone (peptic), 2.5 g/L , soyapeptone (papainic), 5 g/L , yeast extract, 2.5 g/L

composition

agar, 10 g/L , corn starch, 1 g/L , esculin, 1 g/L , ferric ammonium citrate, 0.5 g/L , lithium chloride, 15 g/L , sodium chloride, 5 g/L , special peptone, 23 g/L

manufacturer/tradename

NutriSelect® Basic

manufacturer/tradename

NutriSelect® Plus

manufacturer/tradename

NutriSelect® Basic

manufacturer/tradename

NutriSelect® Plus

technique(s)

microbiological culture: suitable

technique(s)

microbiological culture: suitable

technique(s)

microbiological culture: suitable

technique(s)

microbiological culture: suitable

Application

For the enrichment, cultivation and isolation of all species of Lactobacillus from all types of material

Preparation Note

Suspend 61.15 g in 1000 ml distilled water containing 1 ml polysorbate 80 (TWEEN® 80; Sigma P8074). Boil to dissolve the medium completely and mix thoroughly. Sterilize by autoclaving at 15 lbs pressure (121°C) for 15 minutes. If necessary adjust the pH with glacial acetic acid after sterilization.

Footnote

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
TWEEN is a registered trademark of Croda International PLC

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Resident gut bacteria are constantly influencing the immune system, yet the role of the immune system in shaping microbiota composition during an organism's life span has remained unclear. Experiments in mice have been inconclusive due to differences in husbandry schemes
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The object of the current study was to develop a new process for continuous Feta-type cheese production using a biocatalyst consisting of immobilized rennin on a tubular cellulose/starch gel (TC/SG) composite, which has been proven to be an appropriate carrier
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Bioinsecticides made from the bacterium Bacillus thuringiensis (Bt) are the bestselling bioinsecticide worldwide. Among Bt bioinsecticides, those based on the strain Bt subsp. kurstaki (Btk) are widely used in farming to specifically control pest lepidopteran larvae. Although there is much

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