Single heating segment

Import one strictly increasing-temperature heating scan. DSC requires a matching strictly increasing time column in seconds. Choose a single event range with justified baseline endpoints.

Calibrated mass, temperature, time and heat flow are required. Peak and derivative locations depend on preprocessing; the software does not replace instrument calibration.

Analysis overview

Imported data worksheet

100-row pages show every imported row. Search affects the preview only. Blank/non-numeric measurement rows are reported or rejected according to the selected method.

Workflow, methods and limitations

1. Import data or load a labeled synthetic example.
2. Review the worksheet, header setting, columns and physical units.
3. Choose method controls and run the analysis.
4. Inspect numerical tables, plots, exclusions and method assumptions.
5. Export the settings with the results for reproducibility.

TGA uses mass % as supplied or normalizes mg/g to the first retained mass. It reports residue, selected mass-loss percentage points, 5/10/50% loss temperatures relative to the initial mass and the most negative DTG temperature. DTG is d(mass%)/dT in %/°C, not a time derivative.

DSC integrates corrected heat flow against measured time in seconds. It supports W, mW and mW/mg, requires sample mass, and reports total J and J/g. Event endpoints define a linear baseline when selected; the sign convention is applied to corrected heat flow.

Approximate tangent onset/endset use the strongest local derivative on either side of the peak and intersection with the corrected zero baseline. These are not standardized instrument onset measurements. Inspect plots and bounds; overlapping events may invalidate the interpretation.

Not implemented: modulated DSC separation, calibrated Cp extraction, glass-transition step fitting, multi-rate Kissinger/Ozawa/Friedman kinetics, deconvolution or full commercial thermal-suite equivalence. Cooling, isothermal and multi-cycle scans must be separated/reformatted before use.

Reference: NETZSCH discussion of DSC/TGA evaluation.

Uploaded measurements are processed locally. Native proprietary instrument files, PDF/image extraction and calibrated medical analysis are not supported. Excel formulas use stored values. Host over HTTP/HTTPS because computation uses workers. Reloading clears the session.