News & Events

Seminar on General Information on Interlaboratory Comparisons (ILCs)

The 21st SMIIC MC Training within the SMIIC MC Work Plan 2021 – 2023 V2 was the Seminar on  General Information on Interlaboratory Comparisons (ILCs) that took place on the  28 April 2022 virtually, technically hosted by SMIIC General Secretariat.  43 experts participated in the training.

The training was hosted by NMI: Tübitak UME – Turkey

General Description: Information on types of ILCs, how to participate and general approach to evaluate results in ILCs will be the scope of this study

Objective, expected outcome: To understand why ILCs are needed, how to be involved and how to report ILC results

Who should attend: The seminar should be attended by staff working in metrology laboratories at the level of National Metrology Institutes or secondary level calibration laboratories


  • International vocabulary of metrology - Basic and general concepts and associated terms (VIM)
  • Guide to the expression of uncertainty in measurement (GUM) Measurement comparisons in the CIPM MRA Guidelines for organizing, participating and reporting CIPM MRA-G-11

Duration of training: 2-3 hours (28 April 2022)


Assoc. Prof. Dr. Hüseyin SÖZERİ (huseyin.sozeri@tubitak.gov.tr)

Time Schedule: 10:30 - 13:00


  • Why NMIs need ILCs
  • Types of comparisons
  • Technical Protocol
  • Participation
  • Reporting Comparison
  • Disagreements
  • Monitoring the comparison results
  • Example of ILC from UME Lab