Resistively heated sample preparation apparatus
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United States of America Patent
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May 24, 1994
Grant Date -
N/A
app pub date -
Mar 2, 1993
filing date -
Mar 2, 1993
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An electrical resistance heated oven is used to heat a crucible to melt a sample and to simultaneously heat a casting dish into which the molten sample can be poured. The oven is cooled with the crucible and casting dish within the oven in order to prepare a sample bead for analysis. In another embodiment of the invention the sample is again melted in a crucible and after melting the crucible is moved out of the oven and turned to pour the molten sample into an acid solution positioned external to the oven. The crucible and sample can be moved while in the oven to mix the sample. The method of preparing an analytical sample using the electrical resistance heated oven is also disclosed.
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