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).
Audit Sample Program is to develop consensus standards for the manufacture and analysis of audit samples for source emission testing.
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.PT Provider Accreditors
The Proficiency Testing Provider Accreditor (PTPA) establishes and implements a program to accredit PT Providers and to monitor accredited PT providers to ensure that their studies and practices meet all applicable standards. The PTPA shall meet the requirements established by TNI. An organization may apply to be recognized as a PTPA to the TNI PT Program Executive Committee (PTPEC). The PTPEC will determine whether the organization meets the requirements. Currently, TNI recognizes two organizations as PTPAs: