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T4415 Sigma

Tris-Borate-EDTA buffer

BioReagent, suitable for electrophoresis, 10× concentrate

Synonym: TBE buffer

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Description

Application

TBE running buffer is the most commonly used buffer for DNA and RNA polyacrylamide gel electrophoresis. TBE is used with non-denaturing or denaturing (7 M urea) gels. It is also routinely used for DNA automated sequencing gel. TBE can also be used for agarose gels but is not recommended for preparative gels for recovery of nucleic acids.
Dilution of the TBE stock concentrates to a 1× TBE running buffer results in a buffer containing 89 mM Tris-borate and 2 mM EDTA, pH 8.3. The 5× or 10× stocks may also be added to an acrylamide/bis-acrylamide stock solution for making the PAGE gel. Applied voltages of less than 5 V/cm (distance between the electrodes of the unit) are recommended for maximum resolution.

Ready for use in gel electrophoresis after dilution to working concentrations.
Tris-Borate-EDTA buffer has been used for pulsed-field gel electrophoresis (PFGE).

Other Notes

TBE buffer is prone to precipitation over time. Precipitation generally will not adversely affect performance.

Packaging

The 4L, 10L and 20L sizes are supplied in dispenser with a spigot.

Preparation Note

Prepared with 18 megohm water

Prepared with Biotechnology Performance Certified Trizma base (Product Code T6066) and Molecular Biology Reagents boric acid (Product Code B6768) and EDTA disodium salt (Product Code E5134).

General description

TBE (Tris/Borate/EDTA) Buffer is commonly used in nucleic acid electrophoresis. This solution is effective under slightly basic conditions, which keeps DNA deprotonated, water-soluble, and protected from degradation. This concentrate can be easily diluted to 1x or 0.5x before use (with molecular biology grade water).

Price and Availability


Available in ELITE Grade

Interactive Buffer Table
Safety & Documentation

Safety Information

Symbol 
GHS08  GHS08
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
1
Protocols & Articles

Articles

Introduction to Nucleic Acid Electrophoresis

Introduction Agarose gel electrophoresis for DNA Agarose gel electrophoresis for RNA Polyacrylamide gel electrophoresis for DNA Reference
Keywords: AGE, Buffers, Degradations, Electrophoresis, Environmental, Gel electrophoresis, PAGE, Purification, Separation, Size-exclusion chromatography

Introduction to Southern and Northern Blotting

The transfer of macromolecules such as nucleic acids and proteins to solid-phase membranous support is known as blotting. Fragments of DNA and RNA molecules separated by gel electrophoresis are trans...
Keywords: AGE, Buffers, Digestions, Electrophoresis, Filtration, Gel electrophoresis, Nucleic acid hybridization, Precipitation, Purification, Scintillation, Separation, Sterilizations

Markers and Ladders Selection Guide

DNA and RNA size markers contain a mixture of DNA (or RNA) fragments of known length, making them suitable for estimating the fragment length of concurrently run samples. They stain well with ethidiu...
Keywords: AGE, Electrophoresis, Gel electrophoresis, PAGE, Polymerase chain reaction

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BioUltra Biological Buffers

A buffer, as defined by Van Slyke [1], is "a substance which by its presence in solution increases the amount of acid or alkali that must be added to cause unit change in pH". Buffers are thus very i...
Keywords: Absorption, Adsorption, Biochemistry, Biological Buffers, Biological processes, Buffers, PAGE

Peer-Reviewed Papers
15

References

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