Headspace GC Alcohol — Peak AREA
Use Area from the GC printout, not Height.
Standards
| Standard | Alcohol added (µL) | Ethanol concentration %v/v | Ethanol peak area | Propanol peak area | Ethanol/Propanol peak ratio |
|---|
Calibration graph
Samples — two entries
| Sample | Dilution factor | Ethanol peak area | Propanol peak area | Peak ratio | Concentration from calibration %v/v | Final ethanol %v/v | Final ethanol %w/v |
|---|
Sample calculation: peak ratio → concentration from calibration → × dilution factor → final %v/v → × 0.7894 → final %w/v. The graph uses the same calculated concentration value for the sample drop line.
HPLC Sugar
Enter peak areas. Separate calibration graphs are provided for fructose, glucose and sucrose.
Ion Chromatography
Enter standard concentration and peak area. Calibration graph is generated from your entries.
Headspace GC Alcohol — Good Results — Peak AREA
Use Area from the GC printout, not Height. Data below are entered from the Headspace sheet in Lims - Sample(4).xlsx.
Standards
| Standard | Alcohol added (µL) | Ethanol concentration %v/v | Ethanol peak area | Propanol peak area | Ethanol/Propanol peak ratio |
|---|
Calibration graph
Samples — two entries
| Sample | Dilution factor | Ethanol peak area | Propanol peak area | Peak ratio | Concentration from calibration %v/v | Final ethanol %v/v | Final ethanol %w/v |
|---|
Sample calculation: peak ratio → concentration from calibration → × dilution factor → final %v/v → × 0.7894 → final %w/v. The graph uses the same calculated concentration value for the sample drop line.