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Combining DSC and Microscopy Leads to Better Interpretation
 | | The combination of a DSC 1 instrument and a microscope allows a sample to be examined visually while it is heated or cooled. This visual information is often extremely helpful for the precise interpretation of events. METTLER TOLEDO recommends an instrument combination of a DSC1 or a DSC82xe and a microscope equipped with a camera and image capture technology. |
Features and benefits:
Hgl2 undergoes an endothermic, solid-solid transition at about 140 °C. This polymorphic transition is accompanied by a change in color from red to yellow that is not detected by DSC. The DSC technique allows the transition enthalpy to be accurately measured. If DSC is combined with microscopy, the change in color of the sample can also be observed. Images of a sample of powdered HgI2 during heating show that the transition of each grain of the sample occurs separately – this explains the rather broad DSC peak. The bright spots on the images are due to light reflected directly from individual grains of the sample.
- Imaging possibilities - microscopy yields information on processes that generate little or no enthalpy, resulting in very low detection limits
- Simultaneous microscopy and DSC measurements - provide a complete thermal picture of the sample
- Modularity - a DSC 1 or a DSC82xe can be easily upgraded to include reflected-light microscopy measurement capability
Hgl2 undergoes an endothermic, solid-solid transition at about 140 °C. This polymorphic transition is accompanied by a change in color from red to yellow that is not detected by DSC. The DSC technique allows the transition enthalpy to be accurately measured. If DSC is combined with microscopy, the change in color of the sample can also be observed. Images of a sample of powdered HgI2 during heating show that the transition of each grain of the sample occurs separately – this explains the rather broad DSC peak. The bright spots on the images are due to light reflected directly from individual grains of the sample.
Typical application areas
| Industry | | Applications |
| Plastics (elastomers, thermosets, thermoplastics) | Nucleation and crystallization | |
| Food | Starch analysis, fat melting/crystallization | |
| Chemical (organic and inorganic materials, metals, pharmaceutical products) | Polymorphism and melting |