Brief description of calculator capabilities
- The initial stage of all methods is calibration – determining the calibration characteristics during analysis of standard solutions (SS) with certified concentration values Ccert of volatile compounds. Next, using the established calibration coefficients, the content of analyte compounds in the samples Cmeas is determined.
- The calculator supports the following units for certified concentration values of SS compounds and for results of measurement (AA - anhydrous alcohol): mg/L (mg/L = mg/dm3), mg/L AA, vol.%, vol.% AA, g/100L AA (g/100L AA = mg/100cm3 AA), µg/g.
- In the "IS_Ethanol" method, calculations are performed per AA, therefore, the following units of measurement are possible for working with "IS_Ethanol": mg/L AA, %vol. AA, g/100L AA, mg/100cm3 AA.
- To convert concentration values from one unit of measurement to another, the density of the samples and the volumetric ethanol content of the samples may be required. If both the "primary" and "final" units of measurement are calculated per AA, then information about the strength and the density of SS and product samples is not required.
- To evaluate metrological characteristics, the calculator allows using one, two or three calibration methods simultaneously: calculating the concentrations of compounds Сmeas in SS with certified concentration values Сcert and comparing them by estimating the magnitude of the bias (in %), determining the values of the standard deviation (SD) and the relative standard deviation (RSD) for these solutions, determining the values of the response linearity coefficients - the determination coefficient R2 and the linear correlation coefficient Сp.
- For product samples, the calculator allows using one, two or three calibration methods simultaneously: calculate the concentrations of compounds Cmeas in samples, determine the standard deviation (SD) and relative standard deviation (RSD).
- Chromatograph software and various regulatory documents on chromatographic analysis methods can be designed to construct the following calibration dependencies:
- dependences of concentration values (the ratio of analyte and internal standard concentrations) on the compounds peak area (the ratio of the analyte and internal standard peak areas) - these dependencies are denoted by C/A;
- dependences of compounds peak area values (the ratio of the analyte and internal standard peak areas) on the concentration (the ratio of the analyte and internal standard concentrations) - these dependencies are denoted by A/C.
- The calculator has a "Main Menu" for navigation. To transfer user-entered data, press the button "Press to Submit Data".
- To save the received data, it is recommended to print the HTML page with the results as *.pdf file.
Example of saved file with data (calibration С/A) as *.pdf
If your browser do not support pdf, then the example of data file can be download Example.pdf
.
Online calculator versions:
Calculator with C/A calibration dependencies
Calculator with A/C calibration dependencies
Calculator with C/A and A/C calibration dependencies
