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CTL® Bielefeld GmbH:
8 May 2012

Validity of CTL Certificates

We have noticed that several dealers are using CTL certificates to promote their products which are no longer valid. These is not acceptable.

The validity of CTL Certificates is 2 years. Those with our old letter head (see example below) are definitely no longer valid. Also if neither the recipient or the name of the product is on the certificate you should not buy such products as you are being fooled about the quality.


8 May 2012. © CTL® Bielefeld GmbH

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Contact - Bielefeld

CTL® Bielefeld
Chemisch-Technologisches Laboratorium
Krackser Str. 12
33659 Bielefeld

Tel. +49 521 400 82 89 0