Since november 2019 our material shop for the acquisition of sample materials from proficiency tests already carried out are available online. Suitable sample materials can be easily ordered after a personal registration. Due to the personal registration, new customer numbers are assigned for this purpose, also for existing customers - different customers from one company therefore have different customer numbers.

 You can not register for our proficiency tests via this shop system.

The new system has been extensively tested. Please understand that errors may still occur. In case of any errors or problems please send a short message with the problem description to This email address is being protected from spambots. You need JavaScript enabled to view it.

Please note: our material shop is currently only available in german.