Study focuses on the basis of knowledge the mechanism of the process βSn αSn for use it to analysis of important material
for science and technology. The possibility of ultra-high purity Sn to analyse by measuring the rate (V) of the allotropic changing
(V βSn αSn) is investigated. Metals of such high purity are inaccessible to chemical method, so analyzed by method of a residual
resistance at temperature (T) of liquid He, inaccessible to most enterprises. The method gives an estimate of the total content of
impurities. For Sn with low T of βSn αSn) due to the simplicity of the measuring purity by the V (βSnαSn) is tempting. In high
purity Sn with a low content of impurities, this method seems more accessible and convenient than others and probably possible.
This paper proposes the affordable and simple method of analysis, high sensitivity, accuracy and reproducibility of the results. not
inferior to the complex method of measuring the residual resistance.