From June 3rd 2025 new iis client website!
We are proud to inform you that this year, the Institute for Interlaboratory Studies is an accredited proficiency test provider for 25 years.
We will celebrate this anniversary with the introduction of a refreshed, modern logo. And on top of this, we will launch a new futureproof client website.
What does this mean to you?
• Monday the 2nd of June the website www.iisnl.com will be temporarily unavailable for a maximum of one day.
• Tuesday the 3rd of June the new client website will be accessible under the same website address that you are used to: www.iisnl.com
• From this moment on, you can explore our complete proficiency test (PT) program and after making your own account, order iis proficiency tests on the website!