Skip to Content
MilliporeSigma
All Photos(2)

Documents

L7533

Sigma-Aldrich

LB Broth with agar (Lennox)

EZMix powder microbial growth medium

Synonym(s):

LB broth

Sign Into View Organizational & Contract Pricing
All Photos(2)

About This Item

UNSPSC Code:
41106200
NACRES:
NA.85

grade

for molecular biology

Quality Level

200

sterility

non-sterile

form

powder

composition

Agar, 15 g/L
NaCl, 5 g/L
Tryptone, 10 g/L
Yeast Extract, 5 g/L

technique(s)

microbiological culture: suitable

application(s)

agriculture
food and beverages
microbiology

storage temp.

room temp

suitability

nonselective for Escherichia coli
nonselective for coliforms

General description

Lennox 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 in a low-salt formulation. The addition of agar provides a solid medium for microbial growth.

Application

Suitable for non-selective cultivation of E. coli strains for cloning, DNA plasmid production and production of recombinant proteins. Also suitable for selective cultivation when appropriate antibiotics are added, including those that require low-salt conditions, such as Zeocin®.

Features and Benefits

Lennox EZMix powder with agar provides:
  • A budget-friendly alternative to pre-poured plates
  • Granulated, dust-free format for safer handling and faster mixing
  • Convenient small package to eliminate weighing
  • Easy scale-up using larger package sizes
  • Standard formulation

Preparation Note

1. Suspend 35.6 g in 1 L of distilled water.
2. Heat to boiling while stirring to dissolve all ingredients completely.
3. Autoclave for 15 minutes at 121°C.
To prepare Lennox L Agar: Add 1 g glucose and proceed with preparation instructions as above.
To prepare the medium of Enquist and Sternberg: Aseptically add 10 ml of sterile 1 M magnesium sulfate after autoclaving.

Reconstitution

Add 35.6g powder in 1L water. Heat to boiling while stirring to dissolve powder. Autoclave for 15 minutes at 121C to sterilize. Allow to cool slightly before making additions, such as antibiotics (if desired). Pour into petri dishes and allow to solidify.

Legal Information

Zeocin is a registered trademark of Cayla Sarl

related product

Product No.
Description
Pricing

L7275

LB Broth (Lennox), Tablet microbial growth medium

L7025

LB Broth with agar (Lennox), Tablet microbial growth medium

L7658

LB Broth (Lennox), EZMix powder microbial growth medium

L3022

LB Broth (Lennox), Highly-referenced microbial growth powder medium, low salt, suitable for salt-sensitive E.coli culture.

L2897

LB Broth with agar (Lennox), Highly-referenced microbial growth powder medium with Agar, low salt, suitable for salt-sensitive E. coli culture.

L5542

LB Agar Plates, pre-poured LB agar plates for E. coli

CMC0001

SIG10 Chemically Competent Cells, for protein expression and DNA plasmid production

CMC0007

SIG10 5a Chemically Competent Cells, for DNA plasmid production

CMC0014

BL21(DE3) Chemically Competent Cells, for protein expression

CMC0017

OverExpress™ C41(DE3) Chemically Competent Cells, for the highest protein expression

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Sambrook, J., et al
Molecular Cloning: A Laboratory Manual, 2, 1-1 (1989)
Ausubel, F. M.
Current Protocols in Molecular Biology, 1, 3-3 (1994)
Alexis Kaushansky et al.
Nature protocols, 5(4), 773-790 (2010-04-03)
Protein microarrays provide an efficient way to identify and quantify protein-protein interactions in high throughput. One drawback of this technique is that proteins show a broad range of physicochemical properties and are often difficult to produce recombinantly. To circumvent these
Shuang Wang et al.
STAR protocols, 2(2), 100440-100440 (2021-04-27)
Studies to identify genes relevant to mammalian hepatocyte biology in vivo are largely carried out using germline genetic-engineering approaches, which can be costly and time-consuming. We describe hydrodynamic tail vein injection as an alternative approach to introduce genetic elements into
Raymond Liang et al.
Cell stem cell, 26(3), 359-376 (2020-02-29)
Quiescence is a fundamental property that maintains hematopoietic stem cell (HSC) potency throughout life. Quiescent HSCs are thought to rely on glycolysis for their energy, but the overall metabolic properties of HSCs remain elusive. Using combined approaches, including single-cell RNA

Articles

Bacterial Transformation Protocols

General protocols for growth of competent cells and their transformation (uptake of DNA).

Bacterial Transformation Protocols

General protocols for growth of competent cells and their transformation (uptake of DNA).

Bacterial Transformation Protocols

General protocols for growth of competent cells and their transformation (uptake of DNA).

Bacterial Transformation Protocols

General protocols for growth of competent cells and their transformation (uptake of DNA).

Protocols

Competent Cell Protocols

Technical Article on competent cells. Transformation is a process by which some bacteria take up foreign genetic material (naked DNA) from the environment.

Competent Cell Protocols

Technical Article on competent cells. Transformation is a process by which some bacteria take up foreign genetic material (naked DNA) from the environment.

Competent Cell Protocols

Technical Article on competent cells. Transformation is a process by which some bacteria take up foreign genetic material (naked DNA) from the environment.

Competent Cell Protocols

Technical Article on competent cells. Transformation is a process by which some bacteria take up foreign genetic material (naked DNA) from the environment.

See All

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service