| February 10, 2026
DASIG’s KASOKU module calculates optimal linear calibration parameters (slope and intercept) to convert peak areas into gas concentrations (ppm) for CH₄, CO₂, and N₂O. It uses a Peak Table File and a Preparation File, generated by the GC PREP* module, as inputs.
To ensure accuracy, the module evaluates all standard–peak combinations and filters them by coefficient of variance (CV) ≤ 3% (default or user-defined). Linear calibration curves are then generated, and only those achieving R² ≥ 0.996 (default) are accepted, unless alternative R² thresholds are specified. The selected curve provides the final calibration parameters applied to compute sample concentrations.
KASOKU Calibration curve for standard gas.
KASOKU Regression analysis summary window.
For transparency and documentation, the module outputs regression plots for each gas, embedded within the result file and saved as standalone images.