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L0418 Sigma-Aldrich

LB Agar Carbenicillin - 100, Plates

pre-poured agar plates with 100 μg/ml carbenicillin



Related Categories Bacterial Culture Media, LB Agar and LB Broth, LB Plates, Microbial Media for Molecular Biology and Protein Expression, Molecular Biology More...
Quality Level   100
grade   for molecular biology
sterility   sterile; autoclaved
form   plates (10cm, 20-25ml each)
availability   available only in USA
storage temp.   2-8°C
suitability   selective for Escherichia coli
  selective 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 in a low-salt formulation. The addition of agar provides a solid medium for microbial growth.


LB Agar Carbenicillin - 100, Plates may be used to culture transformed bacteria with an antibiotic-resistant plasmid using a microwave oven.

Suitable for selective cultivation of E. coli strains that contain plasmids conferring carbenicillin resistance. The bacteria can be used for DNA plasmid production or production of recombinant proteins.

Features and Benefits

Miller’s LB Agar plates provide:
• Convenient, ready-to-use 10cm format
• Standard formulation plus antibiotic


15 g/L Agar
10 g/L Tryptone
10 g/L NaCl
5 g/L Yeast Extract
100 μg/ml carbenicillin

Other Notes

The plates must be used within two months of the manufacture date to ensure the antibiotics are fully active. The product may be shipped up until its expiration date but is generally shipped 2-4 weeks before expiration.

Safety & Documentation

Safety Information

Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

Please Enter a Lot Number

Certificate of Origin (COO)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How do I find price and availability?
There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 or view local office numbers.
What is the Department of Transportation shipping information for this product?
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.
Why do the LB-agar plates with antibiotics have such a short expiration date?
The antibiotics in the LB-agar platesare not stable.The antibiotic degrades over time, making it ineffective at selecting transformed bacteria grown on the plate.Because of this, we recommend the plates are used as soon as possible once they are received.For labs with low use, the plates may expire quickly, so they may benefit from pouring their own plates using the LB - Miller powder with agar formulation (L3147).
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Protocols & Articles


Protein Expression Systems

The development of genetic engineering and cloning has opened many possibilities of expression and isolation of heterologous proteins for research purposes. Considerable advances in technology have e...
Keywords: Amplification, Antibiotics, Cell disruption, Cloning, Culture media, Gene expression, Genetic, Genetics, Glycosylations, Molecular biology, Purification, Pyrogens, Transfection, transformation


Transforming E. coli with Engineered Plasmid

Inoue and colleagues developed this method in 1990. It works well for many strains commonly used in cloning. The original method calls for growing the overnight E. coli cultures at 18°C. We find that...
Keywords: Antibiotics, Centrifugation, Cloning, Peptide synthesis, Phase transitions, transformation

Peer-Reviewed Papers


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CMC0003 SIG10 HIGH Electrocompetent 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
C3416 Carbenicillin disodium salt, BioReagent, suitable for plant cell culture

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