SIR #: 355
Section: V1M4, Section 18.104.22.168 (k)
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 22.214.171.124.k do not apply and are replaced by the requirements in the next paragraph - section 126.96.36.199.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.