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.Standard Interpretation
Standard: 2003 NELAC
Section: Appendix C.3.2
Link to relevant standard
REQUEST:
The description of the LOQ does not specifiy a requirement that the standard used for verification of the LOQ include all sample processing steps (like extractions and digestions). The language presented for the LOD verification clearly states that all sample processing steps must be included in the LOD verification process. Should all sample processing steps be included in the analysis of the LOQ standard verification?
TNI FINAL RESPONSE:
(Quality System Expert Committee/NELAP Accreditation Council, 3-x-10)
C.3.2 states 'The laboratory shall determine the LOQ for each analyte of concern according to a defined, documented procedure. This implies that the procedure used for samples and LOQ is by the same defined, documented procedure.