develop consensus standards for use by TNI's programs. This group has a support role in assisting other programs with activities such as guidance and standards interpretation.
fosters the generation of data of known and documented quality is through the National Environmental Laboratory Accreditation Program, or NELAP. The purpose of this program is to establish and implement a program for the accreditation of environmental laboratories.
is to establish and maintain a national PT program to support TNI’s National Environmental Laboratory Accreditation Program, and other activities.
Field Activities Program (NEFAP) Executive Committee is to establish and implement an accreditation program for field sampling and measurement organizations (FSMOs).
on a variety of topics of interest to the environmental measurement community. TNI also hosts two regularly scheduled meetings per year, typically in January and August. Both are a week long and involve open meetings of TNI committees as well as training courses and other special sessions.
TNI would like to recognize its corporate sponsors. Click below for more information about them. To learn how to become a sponsor of TNI, click here.
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upcoming live training:
Practical Applications of Artificial Intelligence for the Environmental Laboratory
Webinar by Mary Johnson, Starts Dec 01, 2026
latest on-demand training:
Field Sampling and Measurements: Ensuring Reliable Results
Webcast by NEFAP Executive Committee
Radiate Knowledge - A Dive into Radiochemistry
Webcast by Radiochemistry Expert Committee
Field Sampling and Measurement Organization (FSMO) Internal Audit Training
Webcast by Katie Strothman and Megan Beaman
Biochemical Oxygen Demand (BOD): From Sample to Report
Webcast by Mary Johnson
How to Write Non-Conformances
Webcast by Marlene Moore