Independent material testing– made in Germany
The CTL GmbH in Bielefeld is a true family business that carries out all testing procedures entirely in Germany.
Welcome to CTL GmbH, your independent, accredited laboratory based in Bielefeld. Since 1996 we have stood for the highest standards in material testing. Our work follows a clear principle: precision, neutrality and and partnership at eye level.
Reliable tests. Certified results. Individual solutions.
As a second-generation family business, we offer not only comprehensive testing services but also genuine consulting expertise - especially for manufacturers, retailers, and suppliers from a wide range of industries.
All tests are conducted exclusively in Germany. This ensures maximum safety, transparency, and international comparability of your test results.
CTL: your accredited laboratory with foresight
Out laboratory sind von der Deutschen Akkreditierungsstelle (DAkkS) nach DIN EN ISO/IEC 17025:2018 akkreditiert. Dank unserer flexiblen Kategorie-C-Akkreditierung können wir Prüfverfahren an Ihre Anforderungen anpassen oder sogar neu entwickeln. Ob Textilien, Tattoo-Farben, Möbelbezüge, Leder, Spielzeuge, Farbmittel oder Automobilkomponenten – wir liefern nachvollziehbare, standardkonforme Ergebnisse und begleiten Sie auf Wunsch vom ersten Produktentwurf bis zur finalen Zertifizierung.
Our laboratory is accredited by the German Accreditation Body (DAkkS) according to DIN EN ISO/IEC 17025:2018. Thanks to our flexible category-C accreditation, we can adapt testing procedures to your requirements or even develop new ones. Whether textiles, tattoo inks, upholstery fabrics, leather, toys, colorants, or automotive components - we deliver traceable, standards-compliant results and, if desired, support you from the first product design through to final certification.
What you can expect from us:
- independent material testing: neutral, precise, accredited
- individual risk assessments and requirement profiles
- long-term retention of test samples: 5 years free of charge
International support: through testing in Germany and inspections directly in China.
Industry diversity meets analytical depth
Our portfolio addresses a wide range of industries. Whether you:
- want to define a textile standard
- need to certify tattoo products according to REACH
- require a furniture-specific testing procedure
... we analyse your requirements in detail and develop a tailored testing concept with you. Our customers come from industry, retail and manufacturing, and they trust us because we do more than test: we help to improve products.
Our technical competences at a glance:
- mechanical testing: tensile strength, abrasion and pilling behaviour, flammability
- chemical analyses: HPLC-DAD, GC/MS, ICP-OES, detection of chromium VI, formaldehyde, aromatic amines
- Tattoo and PMU: testing under REACH, certificate issuance, comprehensive consultancy
- special solutions: testing of jewellery, toys, leather and much more
- Inspections and accredited test methods
- Toy laboratory
- Textile laboratory
- Automotive laboratory
- Tattoo laboratory
Regular investments in modern analytics and attendance at trade fairs ensure that our testing portfolio is always up to date, including with regard to new legal requirements.
Why CTL?
- Neutrality: we test independently. no shareholdings, no conflicts of interest
- Accessibility: personal points of contact, including for special enquiries
- Customer focus: we interpret your test results and provide concrete recommendations for product optimisation
- Future focus: establishment of a second site in China to support sampling and inspections
Trust one of Germany’s most renowned testing laboratories
As a leading laboratory for tattoo ink analysis with an international client base and a clear focus on quality, reliability and service, CTL GmbH is the ideal partner for companies that expect more than just a test report.
Let’s set standards together!
📞 Contact us by phone or email. We look forward to your project.
CTL GmbH Bielefeld: Testing quality. Creating safety.
