A NON-DESTRUCTIVE METHOD TO EVALUATE THE IMPURITY CONTENT IN TRIPLE POINT OF WATER CELLS

摘要

The experiment of solidification of five samples of water contained in glass cells (borosilicate) is presented. The experimental details are described and some error and uncertainty sources in the reproduction of the triple point of water are discussed. The 1/F model is used to estimate the triple point temperature T_0 of an ideally pure sample. It was found that the set of obtained T_0 values, calculated independently for each cell, has a scatter of +-0.03 mK.