Definition of "nitrometer" [ni•trom•e•ter]

• An apparatus for determining the amount of nitrogen or some of its compounds in a substance. (noun)

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• "The volumetric determination of the nitrogen set free during this process is influenced to such an extent by the 50% potassium hydroxide solution adhering to the interior of the measuring tube of the micro-nitrometer, that 2% must be deducted from the volume reading."
• "A portion of the residue containing both the gun - cotton and the soluble cotton can be tested in the nitrometer, and the nitrogen determined."
• "~ Determine moisture and chlorine by the usual methods, and the total, NaNO_ {3}, by means of nitrometer -- 0.45 grm. is a very convenient quantity to work on (gives about 123 c.c. gas); grind very fine, and dissolve in a very little hot water in the cup of the nitrometer; use about 15 c.c. concentrated H_ {2} SO_ {4}."