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 D.1.1.2.1 (c)
Link to relevant standard
REQUEST:
With regards to the requirement of spiking all targeted components over a 2-year period, is this an overall requirement per ANALYTE or per METHOD? As an example, we analyze pesticides by EPA 525.2 and EPA 8270C. Can we spike all target analytes for one method and cover the other? Or must we spike all for both methods?
TNI FINAL RESPONSE:
(Quality System Expert Committee/NELAP Accreditation Council, 9-18-12)
The standard for multi-analytes tests requires that all targeted components be included in a spike mixture for evaluation during a 2-year period and includes any reported analyte (whether detected or not).The committee noted that the preparation for 525.2 and 8270C are different, and spike results could differ. Therefore, each method requires a separate spiking schedule. Methods 624 and 8260, which use the same preparation procedure, could use the same spiking study.