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Research ESRIG - Energy and Sustainability Research Institute Groningen Centre for Isotope Research - CIO Customers


The CIO offers radiocarbon (14C) dating services of the highest quality, as well as stable isotope measurements on C, H, N, O obtained by IRMS.

We only provide services for scientific, forensic and industrial purposes. Thus:

  • We do not date samples of artwork, craftwork, antiques or antiquities for commercial customers. For scientific or governmental organisations wishing to investigate such samples, our declaration form must be completed before submission (contact cio );
  • We do not accept any ivory samples unless they relate to governmental forensic investigations;
  • We do not accept samples from private customers;
  • On 1 September 2021, we ceased conducting 14C analyses on the proportion of biogenic carbon in volatile liquids for batch control purposes. See this notification for more information about the services we offer for liquid samples.

General enquiries

Email | cio
Phone | +31 (0)50 363 9295

CIO Lab | Energy Academy
CIO Lab | Energy Academy
Last modified:30 January 2024 10.02 a.m.