Accredited Standards Committee (ASC Z540)

Committee Charter

To develop American National Standards for the metrology community with consideration toward testing laboratories, and to be proactive in the development of international standards that impact the metrology and testing in the United States.


  • ASC Z540 serves as a forum that NCSLI members can go to learn of latest versions of new standards such that they can join/participate in those working groups, or at the least have early notice of important changes.
  • The ASC Standards Writing Committee actively works to provide positive guidance and support to working group members in national and international committees doing standards work.

Committee Leadership

Steve Marschke, Chair        Email
Bob Stern, Co-Chair            Email
Barbara Tzur, Secretary     Email


Date: Tuesday, August 25, 2020 5:30 PM
Room: TBD
Where: Gaylord Rockies, Colorado
Agenda: TBD

Committee Documents

ACS Z540 Operations Procedure 2020 ANSI Essential Requirements 2020
Draft Minute August 2019