- Requested concentration (nominal concentration): The component concentration the customer requests (e.g. 2,0% Carbon Monoxide in air mixture)
- Blend tolerance: The level of agreement between the blended concentration and the nominal concentration (e.g. blending tolerance of +/- 5%)
- Analytical Results: The reported level of the nominal concentration based on laboratory analysis (e.g. 2,05%)
- Analytical Uncertainty: The level of agreement between the blended concentration and the nominal concentration (e.g. analytical uncertainty of +/- 2%)