6 Verification of the calibration
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6 Verification of the calibration

 Each normally used operating range shall be checked prior to each analysis in accordance with the following procedure:

  • .1 the calibration shall be checked by using a zero gas and a span gas whose nominal value shall be more than 80% of full scale of the measuring range; and

  • .2 if, for the two points considered, the value found does not differ by more than ± 4% of full scale from the declared reference value, the adjustment parameters may be modified. If this is not the case, a new calibration curve shall be established in accordance with 5.5 above.

Parent topic: Appendix 4 - Calibration of the analytical instruments
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