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Expand High Fidelity PCR System, dNTPack



Related Categories Biochemicals and Reagents, Fluorescent Enzyme Substrates, Fluorescent Enzyme Substrates for Immunoassays, Fluorescent Probes, Labels, Particles and Stains
Quality Level   100
usage   sufficient for ≤1,000 reactions (04738276001)
  sufficient for ≤200 reactions (04738268001)
  sufficient for ≤40 reactions (04738250001)
packaging   pkg of 2,500 U (04738276001 [10x250 U])
  pkg of 100 U (04738250001)
  pkg of 500 U (04738268001 [2x250 U])
mfr. no.   Roche
shipped in   dry ice
storage temp.   −20°C


General description

Expand High Fidelity PCR System is optimized to efficiently amplify DNA fragments up to 5 kb. The Expand High Fidelity PCR System is composed of a special enzyme mix containing thermostable Taq DNA Polymerase and a thermostable DNA polymerase with proofreading activity. The fidelity of DNA synthesis with Expand High Fidelity PCR System shows a threefold increase compared to Taq DNA Polymerase. T/A cloning is recommended.

Other Notes

For life science research only. Not for use in diagnostic procedures.

The 5′→3′ polymerase activity of Taq DNA Polymerase and the 3′→5′ exonuclease of the proofreading polymerase combine for improved performance and results; 3′→5′ exonuclease proofreading produces a threefold increase in DNA synthesis fidelity compared to Taq DNA polymerase.


The Expand High Fidelity PCR System is an enzyme blend delivering superior results with twofold higher yield and threefold greater fidelity compared to Taq DNA Polymerase. Choose Expand High Fidelity PCR System for the most sensitive PCR results for genomic targets up to 5 kb in length for:
For maximum convenience, select the 2x concentrated ready-to-use High Fidelity Master.

Features and Benefits

• Use one enzyme for all applications. Enjoy high yield, fidelity, and flexibility.
• Detect PCR products previously undetectable and avoid false negatives.
• Achieve successful results from small quantities of template DNA.


1 kit containing 5 components


Each lot of Expand High Fidelity is function-tested in PCR using human genomic DNA and specific primers for collagen (1kb amplified product) and the tPA gene (4.8kb amplified product).

Unit Definition

Volume Activity: 3.5U/μL
Each dNTPack contains 10mM additive-free sodium salt nucleotides in a ready-to-use mix.

Legal Information

Use of this product is covered by US patent claims and corresponding patent claims outside the US. The purchase of this product includes a limited, non-transferable immunity from suit under the foregoing patent claims for using only this amount of product for the purchaser′s own internal research. No right under any other patent claim, no right to perform any patented method, and no right to perform commercial services of any kind, including without limitation reporting the results of purchaser′s activities for a fee or other commercial consideration, is conveyed expressly, by implication, or by estoppel. This product is for research use only. Diagnostic uses under Roche patent claims require a separate license from Roche. Further information on purchasing licenses may be obtained by contacting the Director of Licensing, Applied Biosystems, 850 Lincoln Centre Drive, Foster City, California 94404, USA.

Expand is a trademark of Roche

Kit component only


Product #

Add to Cart

Expand High Fidelity Enzyme mix    
Expand High Fidelity Buffer, with 15 mM MgCl2 10x concentrated    
Expand High Fidelity Buffer, without MgCl2    
MgCl2 Stock Solution 25 mM    
PCR Nucleotide Mix    
Safety & Documentation

Safety Information

NONH for all modes of transport


Certificate of Analysis (COA)

Please Enter a Lot Number
Protocols & Articles


Roche PCR Reagents and PCR Protocols

For additional information on Hot Start PCR technology, protocols, and to download our free Hot Start PCR eBook, please visit our Hot Start PCR resource guide.
Keywords: Amplification, Cloning, Gas chromatography, Gene expression, Polymerase chain reaction, Polymerase chain reaction - quantitative, Purification, Sequencing, Transcription

Peer-Reviewed Papers


Related Products

Technical Service:

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

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