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Announcement of Working Draft Standard for NELAP

In accordance with the TNI Procedures Governing Standards Development, the following Working Draft Standard 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 Environmental Measurement Methods Expert Committee until August 5, 2012. Written comments should be directed to the Chair, Richard Burrows, at

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

TNI NELAP Working Draft Standard

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

Module 4: Quality Systems for Chemical Testing (sections 1.7.1 and 1.7.2)