On the constancy of the sulphur boiling point

C. W. Waidner, G. K. Burgess
1911 Bulletin of the Bureau of Standards  
In view of the general use and convenience of the sulphur boiling point as a temperature for the standardization of thermometric apparatus, it is highly desirable to demonstrate conclusively by experiment that we are really dealing with a strictly reproducible and satisfactorily constant temperature throughout the column of vapor in the standard form of sulphur boiling apparatus, which is generally used.
doi:10.6028/bulletin.163 fatcat:i43hm3ooyjg6dnn7qvpum3eed4