Missing concentration values in Results
Whenever a concentration cannot be calculated, a
specific status is shown in WebIDQ > Results.
Due to analytical reasons, concentration values may not be available, and will be represented by these statuses:
NA
Empty values are replaced with NA
NaN
Sample volume or ISTD counts is <= 0, then the
concentration is NaN.
0
Analyte counts/area is zero, but the ISTD counts/area is not
zero.
Calibrated concentration is smaller than zero, the concentration is set to 0.
Concentration calculation not possible
- Signal intensity below the defined "height threshold".
- Calibration failed. A note "Calibration failed" is shown.
- Blank samples do not contain ISTDs. Concentrations are not available but intensities.
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