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: 2016
Section: V1M4, Section 1.7.1.1 (k)
REQUEST:
k) The laboratory shall use and document a measure of relative error in the calibration.
i, ii-a and ii-b discuss running calculations on the calibration standard results used in the curve.
For metals analysis, we use ICP/ICPMS and a zero point and single calibration standard, which makes it impossible to calculate %RE or %RSE of a mid point and low level calibration standard. We are interpreting the standard to read that when a zero point, single calibration standard is used, the requirements of 1.7.1.1.k do not apply and are replaced by the requirements in the next paragraph - section 1.7.1.1.L (which specifically discuss requirements for single point calibrations.)
Please confirm that we are interpreting these requirements correctly.
TNI FINAL RESPONSE:
Your interpretation is confirmed as correct.