Administrative Committees

• Credentials Committee
• Finance Committee
• Information Technology Committee
• Nominating Committee
• Policy Committee
• Training Committee
  
  

Advocacy

• Advocacy Committee
  • Mentor Subcommittee
    
    
• Advocacy Documents
Articles • Correspondence • White Papers • Position Statements • Press Releases • Regulatory Comments • Reports

TNI Resources

• Available Training Courses
• Buy TNI Standards, Templates, and Guides
  
  

Management & Oversight

• Executive Director & Staff
• Board of Directors
  • Consumables Task Force

About TNI

The NELAC Institute (TNI) is a 501(c)(3) non-profit organization whose mission is to foster the generation of environmental data of known and documented quality through an open, inclusive, and transparent process that is responsive to the needs of the community. The organization is managed by a Board of Directors and is governed by organizational Bylaws.

Learn more...

Expert Committees

The following committees develop consensus standards for TNI Programs:


• Asbestos Expert Committee
• Chemistry Expert Committee
• Field Activities Committee
• Laboratory Accreditation Body Committee
• Laboratory Proficiency Testing Committee
• Microbiology Expert Committee
• Quality Management Systems
• Radiochemistry Expert Committee
• Stationary Source Audit Sample Committee
• Whole Effluent Toxicity Testing Expert Committee
  
  

Resources

• How the standards development process works (PDF)
• Related Policies & Standard Operating Procedures
  
  

Management & Oversight

• Executive Committee

About Consensus Standards Development

The purpose of this program is to 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.

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Accreditation Body Resources

• List of NELAP-recognized Accreditation Bodies
• List of Non-Governmental Accreditation Bodies
• Become a NELAP-recognized Accreditation Body
  
  

Additional Resources

• Accreditation/Certification Program Profiles
  (summaries of lab accreditation offered in all US states)
• TNI Method Repository (TNI Members Only)
  
  

Management & Oversight

• Laboratory Accreditation System Executive Committee
• NELAP Accreditation Council
• Non-Governmental Accreditation Body (NGAB) Working Group
• Board of Directors
  
  

Related Expert Committees

• Asbestos Expert Committee
• Chemistry Expert Committee
• Laboratory Accreditation Body Committee
• Laboratory Proficiency Testing Committee
• Laboratory Quality Systems
• Microbiology Expert Committee
• Radiochemistry Expert Committee
• Whole Effluent Toxicity Testing Expert Committee
  
  

About NELAP

One of the ways that TNI 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.

Go to NELAP Home Page...

Management & Oversight

• PT Program Executive Committee
  
  

Related Expert Committees

• Laboratory Proficiency Testing Committee
• Stationary Source Audit Sample Committee
  

About the TNI PT Program

The purpose of the Proficiency Testing Program is to establish and maintain a national PT program to support TNI’s National Environmental Laboratory Accreditation Program, and other activities.

Go to PT Program Home Page...

NEFAP Events

• Field Sampling Conclave
• Workshop: Developing and Implementing a Sampling & Analysis Plan for Environmental Studies
• Workshop: Sampling and Analysis of PFAS in Field Blanks

Management & Oversight

• NEFAP Executive Committee

Related Expert Committee

• Field Activities Committee
  

About NEFAP

The purpose of the National Environmental Field Activities Program (NEFAP) Executive Committee is to establish and implement an accreditation program for field sampling and measurement organizations (FSMOs).

Go to NEFAP Home Page...

Management & Oversight

• PDP Executive Committee
  

Related Committees

• Credentials Committee
  
• Training Committee
  

About the Professional Development Program

This program was created in 2025 to oversee TNI's efforts to enhance the knowledge, skills, and abilities of individuals involved in environmental sampling and measurements. The program includes these components:

• Credentials
• Training
• New Professionals
• Scholarship Administration

TNI Conferences & Special Events

• Forum on Environmental Accreditation
• Environmental Measurement Symposium
• Sampling and Analysis of PFAS in Field Blanks Workshop
• Field Sampling Conclave
• Past Conferences
• Meeting Presentations
  
  

Related Sites

• Environmental Measurement Symposium
• National Environmental Monitoring Conference
  
  

About Training & Meetings

TNI hosts live and on-demand training 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.