What are the main performance indicators of an analytical instrument?
As a matter of fact, the question is difficult to answer without specifying the instrument and detector. And I don't know whether the detector is the detector part of the instrument or the whole instrument as detector.
1, linear range, that is, a detector slope remains constant concentration or mass range.2, detection limits, the minimum detectable concentration or quality of the detector.3 limit of measurement, minimum concentration or quality that the detector can accurately measure.4, sensitivity, in GC, refers to the response signal to the sample rate of change, usually refers to the slope of the line.5. Selectivity, in GC, refers to the ratio of the response value of the measured component to the response value of the interference component, which generally refers to the anti-jamming capability of the detector.6, precision, which includes the precision of the method and the precision of the instrument, is usually indistinguishable.
7. Stability. In the potentiometric method, the stability is usually indicated by the potential shift of the electrode system under constant conditions.8. Reproducibility. The mean deviation of potential in the potentiometric method when the finger electrode is returned three times to determine the solution with a concentration of 10-3 mol/L and 10-2 mol/L.
