\u0413\u041e\u0421\u0422 32467-2013
Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation
KS H ISO 1871-2013(2018)
Agricultural food products ― General directions for the determination of nitrogen by the Kjeldahl method
KS M ISO 3332-2017
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
KS M ISO 3332-2017(2022)
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
GB/T 9984.10-2004
Sodium tripolyphosphate for industrial use (including foodstuffs)—Determination of oxides of nitrogen content-3,4-Xylenol spectrophotometric method
GB/T 14849.1-2007
Methods for chemical analysis of silicon metal—Part 1:Determination of iron content—1,10-Phenanthrolion spectrophotometric method
\u0413\u041e\u0421\u0422 29304-92
Ammonium nitrate for industrial use. Method for determination of ammoniacal nitrogen content (titrimetric) after distillation
\u0413\u041e\u0421\u0422 29302-92
Ammonium nitrate for industrial use. Method for determination of total nitrogen content (titrimetric) after distillation
GB/T 9984.10-1988
Sodium tripolyphosphate for industrial use (including foodstuffs)--Determination of oxides of nitrogen content--3,4-Xylenol spectrophotometric method
KS M 1922-2002(2007)
Urea for industrial use-Determination of nitrogen content-Titrimetric method after distillation
\u0413\u041e\u0421\u0422 \u0420 50568.1-93
Urea for industrial use. Determination of nitrogen content. Titrimetric method after distillation
ISO 3332:1975
Ammonium sulphate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
ISO 1592:1977
Urea for industrial use — Determination of nitrogen content — Titrimetric method after distillation
NBS TN-1079
Tables of Industrial Gas Container Contents and Density for Oxygen, Argon, Nitrogen, Helium, and Hydrogen
ISO 3331:1975
Ammonium nitrate for industrial use — Determination of total nitrogen content — Titrimetric method after distillation
ISO 914:1977
Sulphuric acid and oleum for industrial use — Determination of total nitrogen content — Titrimetric method after distillation
ISO 3330:1975
Ammonium nitrate for industrial use — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
ISO 2991:1974
Nitric acid for industrial use — Determination of ammoniacal nitrogen content — Spectrophotometric method
ISO 3239:1975
Sodium sulphate for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
ISO 2899:1974
Sulphuric acid and oleums for industrial use — Determination of ammoniacal nitrogen content — Spectrophotometric method