Dr Tongxiang Ren
https://orcid.org/0000-0002-0813-8990
Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology
Experts
From 16 to 17 April 2026
Consultative Committee for Amount of Substance: Metrology in Chemistry and Biology
Delegates
From 10 to 11 April 2025
NMI Directors and Member State Representatives
Participant
From 17 to 18 October 2024
CCQM Working Group on Isotope Ratios
Vice-Chair
From 14 to 15 April 2026
CCQM Working Group on Gas Analysis
Participant
14 April 2026
CCQM Working Group on Organic Analysis
Organizing Committee
13 April 2026