| 摘要 |
A reversible disposable thermometer usable as a safe, convenient and low cost replacement for the mercury in glass clinical thermometer, comprises temperature indicating materials, with controllable and precise melting points, embedded in a flat probe, wherein they are arranged into an indicating matrix, located on both sides of the probe, which covers the physiological temperature range of humans in 0.2 DEG F. steps, and supplemented by a means of affecting the crystallization process of the compounds so that the melting process is accurately definable and the difference between melted and unmelted stage is readily discernible, such means preferably comprising cationic dye seeding in the materials to multiply crystal nucleation sites for fineness of crystal structure and to provide light scattering properties and, further to reduce solidification induction time to make the thermometer reversible and reusable.
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