Our History

TAG Copenhagen, established in 1996 by Jakob Ross-Petersen, is a first-in-class provider of oligonucleotides across Europe. Furthermore, we are a leading distributor of peptides, antibodies, DNA isolation kits, PCR/qPCR reagents and much more. For more than 25 years, we have sold thousands of custom peptides to universities, hospitals and pharma/biotech companies across Europe.

Quality is essential!

We synthesise quality products using state-of-the-art equipment solely. Our equipment is routinely checked in order to secure first-in-class quality products followed by a first-in-class quality control.

TAG Copenhagen is ISO 9001:2015 and ISO 14001:2015 certified. Each of our employees has a long track record in the production of oligonucleotides with special attention on traceability, maintenance and calibration programs, supplier evaluation, process control, lot release and independent quality control.

CSR & Environment at Tag Copenhagen

Our Team

Henriette Blegvad Ross-Petersen


Karl Jakob Ross-Petersen


Christina Bo Jørgensen

Lab. Technician

Peter D. Valenzuela


Casper Pagh Sillemann

IT & Development

Jakob Riemann Ross-Petersen


Lone Ross-Nylandsted


Waqas Mursal Butt


Quang Han

R&D Engineer

Aleksandar Ivov Aleksandrov


Many Major
Companies Trust Us

TAG Copenhagen has a solid track record of well known customers in Denmark and abroad of whom we have been working with for many years including Universities (Copenhagen, Odense, Aalborg, etc.), Hospitals (Copenhagen, Odense, Aarhus, etc.), The Danish Cancer Society, etc. In Sweden, we are one of the preferred suppliers of oligos to the Swedish University of Agricultural Sciences, Lund University, Göteborg University etc.