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T4038 Sigma

Tris Acetate-EDTA buffer

DNase and RNase, none detected, BioReagent, suitable for electrophoresis, 10× concentrate

Synonym: TAE buffer



Related Categories Biochemicals and Reagents, Biological Buffers, Buffer Convenience Packaging, Buffers A to Z, Molecular Biology,
product line   BioReagent
form   powder blend
impurities   DNase and RNase, none detected
suitability   suitable for electrophoresis
  suitable for gel electrophoresis (after dilution to working concentration)
Featured Industry   Diagnostic Assay Manufacturing



Ready for use in gel electrophoresis after dilution to working concentrations.

TAE running buffer is the most commonly used buffer for DNA agarose gel electrophoresis but is also used for non-denaturing RNA agarose gel electrophoresis. Double-stranded DNA tends to run faster in TAE than in other buffers but can also become exhausted during extended electrophoresis. Buffer circulation or buffer replacement during extended electrophoresis can remedy the lower buffering capacity. Dilution of the concentrated TAE buffer produces a 1× TAE buffer with 40 mM Tris-acetate and 1 mM EDTA, pH 8.3. The 1× TAE buffer is used both in the agarose gel and as a running buffer. Applied voltages of less than 5 V/cm (distance between the electrodes of the unit) are recommended for maximum resolution.


Packaged in pouches

Preparation Note

Prepared with Biotechnology Performance Certified Trizma base (T6066) and Molecular Biology Reagent EDTA disodium salt (E5134). Solutions also contain acetic acid (A6283); powdered blend contains Trizma acetate (T1258).


Produces a 10× concentrate (0.4 M Tris-acetate, 10 mM EDTA, pH 8.3) after dissolving with the indicated amount of water. A suitable container must be supplied.

Price and Availability

Interactive Buffer Table
Safety & Documentation

Safety Information

GHS08  GHS08
Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Protocols & Articles

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