High quality

Nejvyšší dosažitelná kvalita

We ensure careful final inspection independently on manufacturing. The products come with quality certificates, which are available in electronic form... 

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Certificate ISO PDF

We possess ISO 9001:2008 certificate: “Manufacturing high quality reagents...

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Firm’s testimony

  • Production of reagents of the highest quality
  • Demanding output control
  • Emphasis is put...

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Materials for testing of RNA coronavirus, causing


Estimation of the size of DNA fragment generated by PCR is usually based on comparison of electrophoretic migration of the fragment with migration of DNA fragments of defined size (DNA markers). Size of PCR amplicons is often in range of 200 - 1500 bp. This region is covered by DNA fragments which are present in DNA markers.  Top-Bio produces three types of DNA markers with different sizes, uncoloured or coloured.