Description/ Intended use
ICV (Initial Calibration Verification) Checks the calibration against a second calibration source. To be run after each calibration.
CCV (Continuing Calibration Verification) A continuing periodic check on accuracy and drift. To be run after each calibration and every 10 samples.
ICV demonstrates that the instrument is capable of acceptable performance at the beginning of the analytical run. 1) Immediately after each system has been calibrated, the accuracy of the initial calibration must be verified and documented for each target analyte by the analysis of an ICV solution(s). If the ICV %R falls outside of the control limits, the analysis should be terminated, the problem corrected, the instrument recalibrated, and all affected samples reanalysed. 2) If the ICV solution is not available from USEPA, or where a certified solution of an analyte is not available from any source, analyses shall be conducted on an independent standard at a concentration level other than that used for instrument calibration (or the CRI), but within the calibrated range. 3) The ICV solution shall be run at each analytical wavelength used for analysis.
CCV/ICV SOLUTION #2, 125mL
1% v/v Nitric Acid / 3% w/v Tartaric Acid
1:100 or 1:500
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✔ Produced under ISO 17025
✔ Produced under ISO 17034
✔ Assayed by validated ICP-OES procedures
✔ Trace metallic impurities determined by ICP and ICP-MS
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