| 摘要 |
PURPOSE:To enable measurement with high accuracy by putting small balls into a sample cell to be housed in a thermal analysis instrument, applying fine oscillation by an oscillation generator to the aq. soln. sample in the sample cell and measuring the solidifying point of the sample. CONSTITUTION:The sample cell 3 contg. about 20mul aq. soln. sample is housed and set in a cylindrical part 2 of the thermal analysis instrument 1 and while a temp. controller 7 is operated, the cell is cooled and a switch of the oscillation generator 5 is turned on in the case of measuring the solidifying point of a certain aq. soln. The small balls in the sample cell 3 housed in the cylindrical part 2 of the thermal analysis instrument 1 is finely oscillated by this fine oscillation, by which a stirring effect is applied to the aq. soln. sample. The overcooling is thereby suppressed to a smaller level and the process when the sample temp. rises up to the solidifying point temp. can be measured; furthermore, the stable point (solidifying point) of the solidifying point is recorded by a recorder 6.
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