AZO TO METER

n. *m’e*t-u'r, From a priv., go, life (see AZOTE), and pérpoy, a measure. Fr., azotomètre. ” Ger., Sticks toff mes ser. An apparatus invented by Knop for estimating the amount of nitrogen present in ammonium salts or in organic compounds that contain the ammonium residue NH. It consists of a closed ve el communicating with the interior of a graduated gasometric tube which is inverted over water, A measured portion of the substance to be examined is placed in the closed ve el, and is decomposed by agitating with a solution of an alkaline hydro bro mite prepared by airing bromine with an exce of caustic alkali. The nitrogen generated by this decomposition pa es into the gasometric tube, where it is measured. [B, 270.]