Sterling, J. T. <br/><br/>
Titanium Standards for Hydrogen Content 

 -  [Gaithersburg, MD] : U.S. Dept. of Commerce, National  Institute of Standards and Technology,   1962. 
<br/><br/> /pmc/articles/PMC5324965/ 
<br/><br/> This paper describes the preparation, analysis, and certification of a new series of standard samples. These samples consist of commercially pure titanium containing hydrogen at three levels (32 ppm, 98 ppm, and 215 ppm) and have been designated National Bureau of Standards Standard Samples Nos. 352, 353, and 354, respectively. 
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