Eurachem working groups are not maintained indefinitely, and may be closed where the required activites are complete or where activity is better undertaken elsewhere. Historical terms of reference, membership and activities of Working Groups which are no longer active can be found under the links below.

• Reference Materials Working Group
  Chaired by A Zshunke from 1995 to 2005.
• Metrology in Chemistry Working Group
  Initiated in 2000, the working group evolved into the joint regional metrology committee METCHEM. On the reconstitution of Euramet in 2007, the committee became the Technical Committee for Metrology in Chemistry (TC-MC) Euramet.