Calibration And Verification Options; Single-Point Calibration - GE Sievers InnovOx Operation And Maintenance Manual

Chapter 5: Calibration and Verification
For accuracy, the IC standard solution(s) must be prepared just before the calibration. The solutions are basic, so
it will absorb CO from the air. That absorption can significantly change the concentration of the solution. To
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minimize the rate of CO
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the IC calibration, a 40-mL vial should be filled with the standard solution.

Calibration and Verification Options

Single-Point Calibration

When a single-point calibration is performed, only one standard is used, as shown in Figure 14. For that reason,
single-point calibrations are convenient and rapid; however, the analysis of samples may be less accurate than
when other calibration methods are used.
The concentration of samples is calculated from a calibration equation of the form:
C = b*R
where,
R = Mass Response, μg
b = Calibration constant (slope)
C = mg/L Carbon, ppm
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absorption, the solution should be stored in a sealed container until use. Just prior to
Figure 14: Calibration Curve for Single-Point Calibration
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