--- title: "Whitepaper: Surface Activation Control on the Test Bench" description: Read our whitepaper to learn about the principles of ink tests and contact angle measurements, as well as the advantages of using the latter. --- [![KRÜSS Scientific - Explore the World of Surface Science](https://visit.kruss-scientific.com/hubfs/blue_logo_kruss-01.svg "KRÜSS Scientific - Explore the World of Surface Science")](https://www.kruss-scientific.com/en) - [English](https://visit.kruss-scientific.com/whitepaper/surface-activation-control-on-the-test-bench) - [Deutsch](https://visit.kruss-scientific.com/de/whitepaper/aktivierungskontrolle-fuer-oberflaechen-auf-dem-pruefstand) # **Surface Activation Control on the Test Bench** **Why ink tests and 38 dyne as a guideline often miss the mark** [Download Whitepaper](https://visit.kruss-scientific.com/whitepaper/surface-activation-control-on-the-test-bench#form) In quality control, manual, analog methods often persist for a very long time, even when more modern technologies are available. This also applies to the still widespread ink tests in the field of activation control of polymers, which are only now gradually being replaced by contact angle measurements. In this context, a value of 38 mN/m (dynes) has been established as a universal pass criterion for QC tests, which was determined over 50 years ago for polypropylene with organic coatings. This is problematic because if the ideal value for a different combination of substances is higher, adhesion problems often occur. As the tests have supposedly been passed, the cause is often not discovered for a long time. Our whitepaper shows what modern quality control can look like. Read about the advantages of switching to contact angle measurements. Preliminary investigations can also be used to replace the traditional target value of 38 dyne with a value that is suitable for the specific process. ### **Download our whitepaper for free** After you have filled out the form, you will have access to the whitepaper immediately. **Find out in our whitepaper:**  **➤** The concepts on which ink tests and contact angle measurements are based. **➤** The advantages of contact angle technology. **➤** How quality inspections based on individually defined target values succeed. ![kruss-whitepaper-38-dyne-en](https://visit.kruss-scientific.com/hs-fs/hubfs/k-document-thumbnails/kruss-whitepaper-38-dyne-en.png?width=212&height=300&name=kruss-whitepaper-38-dyne-en.png)   ##### SERVICES - [Measurement Services](https://www.kruss-scientific.com/en/products-services/measurement-services) - [Technical Services](https://www.kruss-scientific.com/en/products-services/technical-services) - [Webinars & Seminars](https://www.kruss-scientific.com/en/know-how/webinars-and-seminars) - [Remote Support](https://www.kruss-scientific.com/en/remote-support) - [Newsletter sign-up](https://visit.kruss-scientific.com/newsletter-signup-page?hsLang=en) - [Contact us](https://www.kruss-scientific.com/en/contact) ##### COMPANY - [About us](https://www.kruss-scientific.com/en/company/about-us) - [Job Opportunities](https://www.kruss-scientific.com/en/company/job-opportunities) - [News](https://www.kruss-scientific.com/en/company/news) - [Events](https://www.kruss-scientific.com/en/company/events) ##### GENERAL INFORMATION - [Imprint](https://www.kruss-scientific.com/en/imprint) - [Data Privacy Statement](https://www.kruss-scientific.com/en/data-privacy-statement) - [Cookie policy](https://www.kruss-scientific.com/en/cookie-policy) - [Terms & Conditions](https://www.kruss-scientific.com/en/terms-and-conditions) - [Certificates (ISO 9001)](https://www.kruss-scientific.com/en/certificates) - [Cybersecurity](https://www.kruss-scientific.com/en/security) ##### JOIN THE KRÜSS COMMUNITY