Catalogues and registration

After you have submitted your request by selection in our online catalogue, we will provide you with a non-binding offer with complete cost information and reserve your participation in those proficiency tests. The offer includes quantity discounts and the costs for express shipping and sample protection. With your confirmation of our offer, your interest in participating in the round robin test becomes binding.

In order to make the proficiency test a meaningful instrument of quality assurance, there are lower limits for the size of the participant field. As a rule, a reliable statistical evaluation can only be carried out with the participation of a sufficient number of participants. Even if this case does not occur very frequently with us, we therefore reserve the right to cancel an experiment if there are doubts about the significance or quality of the evaluation. In these cases, the participants are contacted and a solution is sought that meets all interests. Our order confirmation will include those proficiency tests which will take place to the planned extent and on the scheduled date.


Our quantity discounts according to your number of proficiency tests or reference samples:


Costs for express distribution and sample protection:
We take care to ensure that your round robin test samples arrive on time and undamaged at your premises. The costs for express distribution and sample protection are listed in each offer.