News

Christmas and New Years Holiday Please be informed that the office of the Institute for Interlaboratory Studies will be closed from December 24, 2025, through January 4, 2026. Normal operations...

We’re pleased to announce that our updated Proficiency Testing (PT) program for 2026 is now live! To participate, how it works:•    If you haven’t registered your account yet, Register...

Please be informed that the cost overview of Petroleum products and Consumer products have been reviewed and updated. Additionally, the General Conditions of SGS Nederland B.V. have recently been revised,...

The new iis Data Reporting website here will be available from the following PTs that will start this week: Fuel Oil iis25F01 Fuel Oil Metals iis25F01M Fuel Oil Chemical Species...

Only for PTs with sample dispatch date on 18th June 2025 reporting of results should still be done on the previous data entry portal: SGS-iis: Oil, Gas & Chemicals or...

  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...