Announcement of Working Draft Standards for NELAP Proficiency Testing

Date Posted: 7-7-2012

In accordance with the TNI Procedures Governing Standards Development, the following Working Draft Standards will be discussed publicly at the Environmental Measurement Symposium in Washington, D.C., August 6-10, 2012. Interested parties may also submit written comments to the Laboratory Proficiency Testing Committee until August 6, 2012. Written comments should be directed to the Chair, Mitzi Miller, at

All documents are in PDF format. Deletions are in strike-out text, additions are underlined. Click the links below to download.

TNI NELAP Working Draft Standards

Volume 1, Management and Technical Requirements for Laboratories Performing Environmental Analysis:

Module 1: Proficiency Testing

Volume 2, General Requirements for Accreditation Bodies Accrediting Environmental Laboratories:

Module 2: Proficiency Testing