IMMOLASE™ DNA Polymerase

Cat No. Size List Price* Qty  
BIO-21046 250 Units $160.00
BIO-21047 500 Units $266.00
BIO-21048 5000 Units $2,172.00
*For more information on pricing please contact us

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IMMOLASE™ is a heat-activated, thermostable DNA polymerase. IMMOLASE provides high yield and improved specificity when compared to standard polymerases and can eliminate the presence of non-specific binding, such as primer-dimers and mis-primed products.

Features & Benefits

  • Higher Performance - robust polymerase
  • Chemical hot-start PCR enzyme - eliminates non-specific binding
  • Reaction requires activation step - allows convenient reaction set-up at room temperature
  • Suitable for TA cloning - leaves ´A´ overhang


  • For multiplex reactions
  • Products suitable for TA cloning


IMMOLASE™ is a heat-activated thermostable DNA polymerase and provides high yield (fig. 1) and improved specificity when compared to standard polymerases. IMMOLASE can eliminate the presence of non-specifics such as primer-dimers and mis-primed products.

IMMOLASE is inactive at room temperature and requires activation by heat treatment for 10 minutes prior to PCR cycling (fig. 2). This provides greater flexibility in reaction set ups and allows the premixing of PCR reagents at room temperature. Subsequently, the reaction can be handled according to preferred protocols for thermostable DNA polymerases.


Immolase is a trademark of Bioline.



250 Units

500 Units

5000 Units


1 x 50µl

1 x 100µl

10 x 100µl

10x ImmoBuffer


2 x 1.2ml

20 x 1.2ml

50mM MgCl2 Solution


1 x 1.2ml

10 x 1.2ml



Storage & Stability

All components should be stored at -20°C upon receipt for optimum stability. Repeated freeze/thaw cycles should be avoided. When stored under the recommended conditions and handled correctly, full activity of the reagents is retained until the expiry date indicated on the outer box label.

Shipping conditions

Shipped on Dry Ice or Blue Ice.

Certificates of Analysis (COAs)

Certificates of Analysis for IMMOLASE™ DNA Polymerase are grouped by catalogue number and then listed by batch number. Larger pack sizes are listed first. To locate the COA for your product, first find the catalogue number and then the required batch number.

View all 24 COAs for IMMOLASE™ DNA Polymerase →

Frequently asked questions

  • Which polymerase do I need for my specific application?

      At Bioline we pride ourselves in supplying high-quality polymerases to suit your requirements. To aid your selection of the most suited enzyme for your specific applications, please see our enzyme selection tool.

  • What are the storage conditions and stabilities of Bioline polymerases?

      All our polymerases are guaranteed for a period of 12 months from the date of purchase. These should be stored at -20°C during this time for optimal retention of activity.
      Please Note: We do not recommend the storage of our polymerases at -80°C as ice crystals could form on the active site, which may affect or destroy the activity of the enzyme.
  • I am having problems optimizing my PCR, what would you recommend?

      PCR can be a challenging technique, with various parameters to optimize to achieve the best results. If you are having problems, these could be easily resolved by addressing a few issues. Please see our PCR troubleshooting guide for suggestions and help with your specific problems.

      Observation Recommended Solution(s)
      No or low PCR yield  For difficult templates (AT and GC rich).
       Enzyme concentration too low – increase the amount enzyme in 0.5U increments.
       Magnesium concentration too low – increase concentration in 0.25mM increments with a starting  concentration of 1.75mM.
       Primer concentration not optimised. Titrate primer concentration (0.3-1µM); ensuring that both  primers have the same concentration.
       Template concentration too low – Increase Concentration of template
       Perform a positive control to ensure that the enzyme, dNTPs and buffers are not degraded and/or  contaminated
      Multiple Bands  Primer annealing temperature too low. Increase annealing temperature. Primer annealing should be  at least 5°C below the calculated Tm of primers.
       Prepare master mixes on ice or use a heat-activated polymerase.
       For problems with low specificity. Try Hi-Spec Additive or 2x PolyMate (not supplied) to improve  specificity.
      Smearing or artifacts  Template concentration too high. Prepare serial dilutions of template.
       Too many cycles. Reduce the cycle number by 3-5 to remove non-specific bands.
       Enzyme concentration too high - decrease the amount of enzyme in 0.5U increments.
       Extension time too long. Reduce extension time in 0.5-1 minute increments.

  • What do the terms yield, fidelity, processivity and specificity actually mean?

      These terms refer to parameters to be considered when performing PCR, and are important features in selecting the correct enzyme for your needs. Understanding what they mean is therefore crucial:
      Yield: The amount of DNA produced in a PCR reaction
      Fidelity: The accuracy of the enzyme at incorporating the correct dNTP to the elongating DNA strand.
      Processivity: The length of time a polymerase is associated with the template, and therefore the size of fragment which can be amplified.
      Specificity: A measure of the unwanted by-products generated in a reaction.
  • What is a proofreading polymerase?

      In nature, the ability of a DNA polymerase to correct misincorporations of nucleotides in the DNA strand being elongated is often crucial to the survival of the host organism. This ability is termed "proofreading activity", and occurs in the 3' to 5' direction. This activity also leads to the polymerase removing unpaired nucleotides overhanging at the 3'end (A-overhangs), creating blunt ends.
  • What are the error rates of Bioline DNA Polymerases?

      Please see the following table for the appropriate error rates:

      BIOLASE, IMMOLASE, MangoTaq, MyTaq DNA Polymerase
       1.1 x 10-4 base substitutions/bp (Tindall and Kunkel, 1988)
       2.4 x 10-5 frameshift mutations/bp (Tindall and Kunkel, 1988)
       2.1 x 10-4 errors/bp (Keohavang and Thilly, 1989)
       7.2 x 10-5 errors/bp (Ling et al., 1991)
       8.9 x 10-5 errors/bp (Cariello et al., 1991)
       2.0 x 10-5 errors/bp (Lundberg et al., 1991)
       1.1 x 10-4 errors/bp (Barnes, 1992)
      ACCUZYME  1.6 x 10-6 errors/base (Lundberg et al., 1991).

  • How is one unit of activity of a polymerase defined?

      One unit is defined as the amount of enzyme that incorporates 10nmoles of dNTPs into acid- insoluble form in 30 minutes at 72°C.
  • What are the benefits of using a hot-start polymerase?

      During PCR setup at room temperature, standard polymerases will have some activity. When using a hot-start polymerase, this enzyme will have no activity at room temperature, thus reducing the risk of unspecific products in the reaction due to these mis-primed oligonucleotides. This feature makes this type of polymerase ideally suited to high-throughput applications, where the reactions may be left sitting at room temperature for prolonged periods of time.
  • What is the heat activation time required for this polymerase?

      IMMOLASE DNA Polymerase requires a heat-activation step of 10 minutes at 95°C.
  • Which specific applications is IMMOLASE DNA Polymerase suited to?

      As well as most standard applications, IMMOLASE DNA Polymerase is ideally suited to the following:
      • High-throughput applications
      • Multiplex PCR
      • TA Cloning

  • What are the features of IMMOLASE DNA Polymerase?

      The features of IMMOLASE DNA Polymerase are as follows:

      • Heat Activation: 10 minutes at 95°C
      • Speed: 15-30s/kb (template dependant)
      • Length amplified: Around 5kb (genomic DNA)
      • Optimal Extension Temperature: 72°C

Other researchers use:

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