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).
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 1.6.3.2 (c)
REQUEST:
Per TNI V1M4 section 1.6.3.2: "This on-going demonstration may be one of the following: c) at least four (4) consecutive laboratory control samples with acceptable levels of precision and accuracy." I would like clarification on the word "consecutive". There are some analysts within the lab that interpret this as four LCS in a row on the same day, while others interpret this as one LCS prepared/analyzed on four different days (in a row).
TNI FINAL RESPONSE:
Either of the instances described are acceptable per the Standard. Consecutive means four LCSs per analyst prepared and/or analyzed without intervening LCSs, regardless of timeframe.