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L2542

Sigma-Aldrich

LB Broth (Miller)

LB Broth (Miller)
1 of 1 reviewers received a sample product or took part in a promotion

Liquid microbial growth medium

Synonym(s):

Luria Broth Miller, Luria-Bertani broth, Miller

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500 ML
$45.50

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500 ML
$45.50

About This Item

UNSPSC Code:
41106200
NACRES:
NA.85

$45.50


In StockDetails


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grade

for molecular biology

Quality Level

sterility

sterile; 0.2 μm filtered

form

liquid

technique(s)

microbiological culture: suitable

pH

6.5-7.2

application(s)

microbiology

storage temp.

room temp

suitability

nonselective for Escherichia coli
nonselective for coliforms

General description

Miller’s LB is a highly-referenced microbial growth medium used for the cultivation of E. coli. This nutrient-rich microbial broth contains peptides, amino acids, water-soluble vitamins, and carbohydrates. It enables fast growth, improves growth yields for various bacterial species, and can retain the hydrophilic behavior of samples for longer periods. [1]

application

LBBroth (Miller) is suitable for:

  • non-selective cultivation of E. coli strains for cloning, DNA plasmid production and production of recombinant proteins.
  • selective cultivation when appropriate antibiotics are added.
  • the cultivation of E-coli cells for anti-bacterial assays. [2][3][4]

Features and Benefits

Miller′s LB liquid provides:
  • Filter-sterilized, ready-to-use format
  • Convenient package size
  • Standard formulation

Components

10g/L Tryptone
10 g/L NaCl
5 g/L Yeast Extract

Storage Class

12 - Non Combustible Liquids

wgk_germany

nwg

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


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Articles

Genetic engineering enables large-scale expression and isolation of recombinant proteins for research purposes.

Protocols

General protocols for growth of competent cells in microbial medium.

Questions

1–6 of 6 Questions  
  1. Is this product defined as animal free component?

    1 answer
    1. This product is not defined as an animal-free component.

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  2. What is the Department of Transportation shipping information for this product?

    1 answer
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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  3. Which bacterial culture medium is the best choice for my application?

    1 answer
    1. Each of the broths will likely grow E. coli very well, but there are still general guidelines for choosing a broth when you are working without a protocol. Generally:LB - Miller and LB - Lennox are used for E. coli growth and maintanence, DNA plasmid production and protein production.  The Lennox formulation has a lower salt content required for some salt-sensitive selection antibiotics.LB - Luria low salt is used for special applications where the E. coli growth or other constraints require the lowest possible salt content.Terrific Broth is used for higher yield protein production and high yield DNA plasmid production, because of the faster growth of the E. coli in this medium.SOB is used for protein production, DNA plasmid production and the generation of high-efficiency competent cells.SOC is used for initial growth of competent cells and the transformation procedure.

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  4. What is the difference among the LB - Miller products?

    1 answer
    1. LB - Miller is available in many types to suit your needs.  The different product formats include powder and liquid form.  The powder form is also available with agar for easy LB-agar plate preparation.L2542 (LB Miller liquid)L3522 (LB Miller powder)L3147 (LB Miller powder with agar)

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  5. What are the differences among the Luria, Lennox and Miller LB formulations?

    1 answer
    1. LB, (originally termed lysogeny broth) was initially composed of tryptone, yeast extract, NaCl and glucose.  Soon after, the glucose was omitted (Miller's version), and later the NaCl content lowered by half (Lennox's version).  For some applications, even lower salt is required (Luria's low salt version).

      Helpful?

  6. Will adding magnesium to the culture medium increase cell density?

    1 answer
    1. In microbial broth formulations that do not already contain magnesium, the addition of 10-20 mM MgCl2 or MgSO4 may increase cell densities.  You may need to also increase the shaking speed of the incubator.

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Reviews

1 of 1 reviewers received a sample product or took part in a promotion

Active Filters

  1. San Diego
    • Review 1
    • Vote 1
    5 out of 5 stars.

    Competent

    Works exactly as you would expect it to. Recommended to store away from light

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