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
REQUEST:
Some instrumentation, such as turbidimeters, spectrophotometers, etc. are purchased and received with an internal calibration performed by the manufacturer. Can these internal calibration be used to calculate test results?
TNI FINAL RESPONSE:
It is recognized that the calibration capabilities and sample analysis applications for this type of equipment varies. Yes, the manufacturer established initial calibration may be used for an accredited analysis if the requirements of V1M4 1.7, the method, and any applicable regulations can be met and documented by the laboratory.
If the manufacturer established initial calibration is used to calculate test results the manufacturer shall meet all of the requirements for initial calibration as listed in V1M4 1.7.1.1 and shall provide the accredited laboratory applicable data and records for the calibration in order to meet the requirements of V1M4 1.7.1.1. The laboratory must maintain these records per V1M4 1.7.1.1 b).