The invention is directed to a silver/palladium (AgPd) cell for adjusting or measuring a level of hydrogen in a high pressure environment, a high temperature environment, and/or an environment incompatible with stainless steel. The inventive cell includes a hollow diffusion tube of a AgPd alloy operably...http://www.google.co.uk/patents/US6554015?utm_source=gb-gplus-sharePatent US6554015 - Single piece silver/palladium cell for adjusting or measuring a level of hydrogen and methods therefor
