Differential Scanning Calorimetry (DSC)
Differential Scanning Calorimetry (DSC)
Differential Scanning Calorimetry (DSC)
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<strong>DSC</strong>: Calibration & Sample Preparation<br />
�Instrument Calibration<br />
� <strong>Differential</strong> Heat Flow (Cell Constant)<br />
� Temperature<br />
� Baseline<br />
�Miscellaneous<br />
� Purge Gas<br />
� Cooling Accessories<br />
� Environment<br />
�Sample Preparation<br />
�Selecting Experimental Conditions<br />
�Routine Maintenance/Sample Press<br />
<strong>DSC</strong>: Heat Flow Calibration<br />
�<strong>Differential</strong> Heat Flow (ASTM E968)<br />
�Heat of fusion (melting) standards<br />
�Heat capacity (no transition)<br />
�Miscellaneous<br />
� Use specific purge gas at specified rate<br />
� Calibrate w/cooling accessory functioning if it will be<br />
used to run samples<br />
� Single point used for heat of fusion which is typically<br />
accurate to +/- 1-2% from -50°C to 350°C<br />
� Calibration should not change w/heating rate
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