Nitrogen Determination by Micro-Dumas Method. Improvements in Apparatus

Abstract

Improvements In apparatus For the Dumas nitrogen microdetermination are described. The original microazotometer oF Pregl has been modified by replacing the top stopcock with a ball and socket

Dumas Microdetermination of Nitrogen in Refactory Organic Compounds. Modification of Zimmermann's Method

“…The nitrometer used is of the Stehr type (19), as supplied by Arthur H. Thomas Co., Philadelphia. Instead of an iron wire to loosen nitrogen bubbles from the mercury surface (15), an iron bar encased in borosilicate glass (about 15 mm.…”