The triple points of water, mercury and gallium are realized, mainly for the calibration of capsule-type thermometers, by a calorimetric method using platinum cells for water and mercury, and a small glass cell for gallium. Their molar impurities are estimated from the relation between the melting temperatures and the inverses of the fraction of melt. Almost all the samples show linear relations. For water, the values at 1/F=0 of all the samples agree to within ±0.1, mK and, for mercury, the values of two samples are within ±0.05mK. It is pointed out that the platinum cell is available for water and mercury, but is unsuitable for gallium.
展开▼
机译：水，汞和镓的三点主要是通过使用铂池测量水和汞的热量法，以及使用小的玻璃池测量镓的热量法实现的，主要用于胶囊型温度计的校准。从熔融温度与熔融分数的倒数之间的关系可以估算出它们的摩尔杂质。几乎所有样本都显示线性关系。对于水，所有样品的1 / F = 0值均在±0.1 mK之内；对于汞，两个样品的值均在±0.05mK之内。需要指出的是，铂电池可用于水和汞，但不适用于镓。
展开▼
