Sustainability Assessments

Sustainable development of companies

Forest with earth in circle.

Circularity index

A circularity index is a score that represents the degree of circularity potential of a product throughout its lifecycle, as measured by one or more circularity indicators. At Normec OWS, we can create a circularity index for you based on your data. This is useful for manufacturers, for example, as it provides quantitative information to support circularity claims. It can also be used to measure and improve the circularity of material flows.

Why Normec OWS?
  • Independent laboratory
  • Recognized worldwide
  • Expert in the field

Sustainability reporting

A circularity index provides a circularity score, for example, between 0 (fully linear) and 1 (fully circular). While no ISO standards exist for circularity indices, they can be used to supplement Life Cycle Assessments (LCAs) and Life Cycle Sustainability Assessments (LCSAs) for sustainability reporting.

The importance of the circularity index is underlined by the fact that the transition to a circular economy is considered a key aspect in the development of a sustainable future.


Normec OWS is currently involved as an EU-H2020-TERMINUS project partner. This European project addresses the challenge of unlocking the recycling and reuse of flexible multi-layer and multi-compound packaging.

In part, the project partners aim to modify existing circularity indicators so that these can be used in different industries.

Curious what Normec OWS can do for your company?

Request a quote

All frequently asked questions
in a row

Is Normec OWS ISO 17025 accredited?

Yes, we are recognized by DIN CERTCO in line with ISO 17025. This accreditation covers all test procedures and standards with regard to compostability and biodegradation. Additionally, we are ISO 17025 accredited by BELAC for our compost analyses and also recognized by TÜV Austria. Normec OWS is also ISO 17020 accredited for inspection services and ISO 14001 approved for environmental management. View our recognitions & certificates.

Where is Normec OWS located?

Our main offices are located in Ghent, Belgium. We also have a subsidiary located in Kettering, Ohio to serve the needs of our American customers.

How long does testing take?

Testing duration depends on the specific type of test and the product itself. This can range from a couple of weeks for material characteristics testing, to months or even years for biodegradation testing. As these are microbial processes, we cannot predict the exact duration beforehand.