SILVER: In Chemical Plant Construction Available to Purchase

During the past 30 years there has been a great increase in the range of the corrosion‐resistant materials available to the chemical engineer. At the same time, the requirements of the chemical industry have become more severe, partly because of the development of processes employing highly corrosive intermediate stages, and partly because of increasingly strict control of the purity of chemical products, Silver has been long established as a constructional material for chemical plant ; it has both advantages and limitations for this purpose, and it has naturally undergone a change of emphasis. In some of its older uses it has been replaced by more recently developed less costly materials; but new demands have been created for it in the expanding field of chemical manufacture, new constructional methods have been developed and there has, in fact, been a steady development in its uses in this industry.