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KAPA2G Fast HotStart PCR Kit

with dNTPs & Mg-free buffers

  •  NACRES NA.55



Quality Level   100
shelf life   ≤18 mo.
packaging   pkg of 250 U (KK5512)
  pkg of 500 U (KK5510)
mfr. no.   Roche
shipped in   dry ice
storage temp.   −20°C


General description

KAPA2G Fast DNA Polymerase is a second-generation (2G) enzyme engineered for higher processivity and speed, offering significantly faster extension rates than wild-type Taq polymerase. In addition to speed, KAPA2G Fast provides higher yields and sensitivity than competitor enzymes across a broad range of targets.
KAPA2G Fast DNA Polymerase Kits are designed for fast PCR, in which total reaction times are 20–70% shorter than those of conventional PCR assays performed with wild-type Taq DNA polymerase. This can be achieved without sacrificing reaction performance, and does not require specialized PCR consumables or thermocyclers.

Other Notes

For Research Use Only. Not for use in diagnostic procedures.


KAPA2G Fast HotStart PCR Kit has been used in:
• Routine PCR
• Fast PCR
• Genotyping

Features and Benefits

Reduce cycling times up to 75% :
• Extension times as low as 1 sec per kilobase
• Broad coverage of both AT- and GC-rich targets

High speed, higher performance :
• Single copy sensitivity from complex targets
• Increased yields

Quick Notes:
• KAPA2G Fast HotStart PCR Kits with dNTPs & Mg-free buffers contain the engineered KAPA2G Fast HotStart DNA Polymerase, developed for fast PCR.
• Use 1 sec extension time for amplicons <1 kb and 15 sec/kb for longer amplicons, and save 20–70% of total reaction time.
• No need for specialized instrumentation or PCR consumables.
• Optimized buffer system offers improved yields,specificity and sensitivity, facilitating efficient primerannealing across a wide range of primer lengths,GC contents, and melting temperatures.
• Use 0.5 U KAPA2G Fast HotStart DNA Polymerase per 25 μL reaction, or less for smaller volumes.
• For high reaction efficiency, do not exceed 25 μL reaction volumes.
• The buffer is available with and without MgCl2 KAPA2G Buffer A contains 1.5 mM MgCl2 at 1X, while KAPA2G Buffer M is Mg-free. Aside from MgCl2 content, these two buffers are identical.
• Reaction products are 3’-dA-tailed and may be cloned into TA cloning vectors.


KAPA2G Fast HotStart PCR Kit with dNTPs & Mg-free buffers includes the following:
• KAPA2G Fast Standard or HotStart DNA Polymerase (5 U/μL)
• 5X KAPA2G Buffer A with MgCl2
• 5X KAPA2G Buffer M (Mg-free; available with select HotStart kits)
• MgCl2 (25 mM)
• dNTP Mix (10 mM each dNTP; optional)


Each batch of KAPA2G Fast DNA Polymerase is confirmed to contain <2% contaminating protein (Agilent Protein 230 Assay). KAPA2G Fast Ready Mix is subjected to stringent quality control tests, is free of contaminating exo- and endonuclease activity, and meets strict requirements with respect to DNA contamination levels.

Preparation Note

Always ensure that the product has been fully thawed and mixed before use. Reagents may be stored at 4°C for short-term use (up to 1 month). Return to -20°C for long-term storage. Provided that all components have been handled carefully and not contaminated, the kit is not expected to be compromised if left (unintentionally) at room temperature for a short period of time (up to 3 days). Long-term storage at room temperature and 4°C is not recommended. Please note that reagents stored at temperatures above -20°C are more prone to degradation when contaminated during use, and therefore storage at such temperatures is at the user’s own risk.

Safety & Documentation

Safety Information

Signal word 
Hazard statements 
NONH for all modes of transport


Certificate of Analysis (COA)

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Protocols & Articles


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