Differential Scanning Calorimeter (DSC)
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INSTRUMENT NAME & MODEL: Differential scanning calorimetry / Model (DSC) 25
Differential scanning calorimetry (DSC) is a thermoanalytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature. The basic principle underlying this technique is that when the sample undergoes a physical transformation such as phase transitions, more or less heat will need to flow to it than the reference to maintain both at the same temperature. Whether less or more heat must flow to the sample depends on whether the process is exothermic or endothermic. For example, as a solid sample melts to a liquid, it will require more heat flowing to the sample to increase its temperature at the same rate as the reference. This is due to the absorption of heat by the sample as it undergoes the endothermic phase transition from solid to liquid. Likewise, as the sample undergoes exothermic processes (such as crystallization) less heat is required to raise the sample temperature. By observing the difference in heat flow between the sample and reference, differential scanning calorimeters are able to measure the amount of heat absorbed or released during such transitions. DSC may also be used to observe more subtle physical changes, such as glass transitions.
CATEGORY: THERMAL LABORATORY
Special Features
- Fusion Cell™ with patented technology provides unrivaled performance in baseline flatness, sensitivity, resolution, and reproducibility. Its superb technology enables detection of the weakest thermal transitions and the most accurate enthalpy and specific heat capacity.
- Exclusive Advanced T4P Tzero® heat flow technology for ultimate DSC performance has the unique capability to conduct and store heat capacity measurements in a single run.
- Modulated DSC® (MDSC®), for the most efficient separation of complex thermal events.
- One-Touch-Away™ User Interface, now standard on all Discovery DSC models, enhances usability and access to data on the instrument.
- Reliable linear autosampler with programmable tray positions for worry-free 24/7 operation, flexible programming of experiments, and automated calibration and verification routines.
- Widest range of refrigerated cooling options eliminates liquid nitrogen expense and ensures uninterrupted sub-ambient operation during extended autosampler routines.
- Tzero Press and pans for fast, simple, and reproducible sample preparation.
- Powerful software that delivers an exceptional user experience in a combined package for instrument control, data analysis, and reporting. Features such as automated calibration routines and real-time test method editing provide unmatched flexibility, while One-Click analysis and custom reporting raise productivity to new levels.
- Commitment to quality backed by the industry’s ONLY five-year cell and furnace warranty for peace of mind.
APPLICATIONS
DSC analysis is used for numerous applications in a wide range of industries. Examples include glass transition determination and the investigation of chemical reactions, melting and crystallization behavior.
Other DSC applications deal with the influence of additives, fillers or the processing of materials. The characteristic shape of the individual DSC curves is used for quality control.
Sample Requirements
- Powder
- Solid
- Liquid
Typical Results
DSC Result
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