Grind the sample some. Grind the sample into a fine powder. Put the smallest amo

Question

Grind the sample some. Grind the sample into a fine powder. Put the smallest amount you can see in a capillary tube. Fill the capillary tube with about 3mm of powder. Set the voltage to rise quickly to 20 degree below the expected temperature, then re-adjust so the temp rises at 2 degree per minute. Set the voltage to rise quickly to 20 degree below the expected temperature, then re-adjust so the temprises at 10 degree per minute. Record the temp at which liquid first appears and the temp at which the last crystal dissappears. Record the temp at which the sample completely melts and the temp when it boils.

Explanation / Answer

Step 1. The heating stand is rapidly preheated to a user-specified start temperature, selected just a few degrees below the expected melting point of the samples. Step 2. Once the temperature is stable, up to three sample capillaries are inserted into the oven and after the temperature stabilizes (i.e. thermal soak) a heating ramp is immediately launched. Step 3. The temperature of the samples continues to rise at the user-specified ramping rate until a user-specified stop temperature is reached. Automated and/or visual observations of the melting point, melting range, and other thermal related processes are tagged during this time. Step 4. At the end of the heating ramp, the capillaries are discarded and the heater stand is rapidly cooled down back to the start temperature in preparation for a new determination.

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