ASTM E967 Test for Temperature Calibration of Differential Scanning Calorimeters and Differential Thermal Analyzers

Scope:

Differential scanning calorimeters and differential thermal analyzers are utilized to determine materials’ transition temperatures. To obtain meaningful information in an absolute sense, it is necessary to calibrate the temperature of the apparatus or compare the resulting data to that of known standard materials. The ASTM E967 test is useful for calibrating the temperature axis of differential scanning calorimeters and thermal analyzers.

Test Procedure:

In ASTM E967, the calibration material undergoes heating at a controlled rate in a controlled atmosphere across a region of known thermal transition. The heat flowing into the calibration material is monitored and recorded. A transition is noted by the specimen’s energy absorption, resulting in a corresponding endothermic peak in the heating curve.

Video 01: What Is Differential Scanning Calorimetry (DSC)?

Data:

The following information is provided:

The sample atmosphere, as indicated by gas flow rate, purity, composition, and calibration procedure results, including slope and intercept values.

Conclusion:

The ASTM E967 test offers comprehensive guidelines and procedures for the temperature calibration of differential scanning calorimeters and thermal analyzers. The standard ensures that these instruments, widely used in materials science, chemistry, and engineering, produce accurate and reliable data. The standard describes in detail the required procedures, equipment, and calibration materials, as well as the necessary calculations and data analysis.