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Standard Interpretation

SIR #: 437
Standard: 2016
Section: V1M4, Section (c)


Per TNI V1M4 section "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).


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.