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.3.1
Link to relevant standard
REQUEST:
Are there parameters/analytes for which TNI does not require MDLs/LOD? For example, residue(TSS, TDS, TS), BOD.
TNI FINAL RESPONSE:
(Quality Systems Expert Committee and NELAP AC, 3-31-13)
C.3.1 c) states in part 'An LOD study is not required for any component for which spiking solutions or quality control samples are not available such as temperature, or, when test results are not to be reported to the LOD (versus the limit of quantitation or working range of instrument calibration)...' The NELAC Standard doesn't require any LOD determinations unless data are reported below the LOQ, AND a spiking solution or quality control sample is available. The proposed revisions to the TNI standard provide additional clarity to this subject.