哈特公司为建立锌的凝固点专门设计了一种密封容器，这种客器有诸多优点，例如使用方便，寿命较长等。纯度为９９．９９９９％的锌样品放入石墨坩锅后被封入一个充满纯氩气的熔融石英容器中，经测定，其复现性为０．２４ｍＫ。本文概述了实现固定点的方法，并将测试结果与经ＮＩＳＴ标定过的标准铂电阻温度计的结果进行了比较，二者之间数据之差小于０．３ｍＫ．凝固点附近的扩展不确定度（包含系数ｋ＝２）为１．０ｍＫ，满足ＮＩＳＴ最高准确度的要求． Hart designed a sealed container specifically for establishing the freezing point of zinc, which has many advantages such as ease of use and long life. A zinc sample with a purity of 99.9999% was placed in a graphite crucible and then sealed in a fused silica container filled with pure argon. The reproducibility was 0.24 mK. This article provides an overview of the method of implementing fixed points and compares the results with those of a standard platinum resistance thermometer calibrated by NIST. The difference between the two data is less than 0.3 mK. The extended uncertainty (including the factor k = 2) near the freezing point is 1.0 mK, meeting the highest NIST accuracy requirements.