CJ 26.27-1991 城市污水 总氮的测定 蒸馏后滴定法

硝酸磷肥中总氮含量的测定 蒸馏后滴定法
Determination of total nitrogen content for nitrophosphate - Titrimetric method after distillation

2008-06-17

复混肥料中总氮含量的测定 蒸馏后滴定法
Determination of total nitrogen content for compound fertilizers titrimetric method after distillation

2010-09-26

Fertilizers — Determination of total nitrogen content — Titrimetric method after distillation
肥料和灰分；总氮含量的测定——蒸馏后滴定法

1984-05-01

Fertilizers. Chemical analysis. Determination of nitrogen-Method for determination of total nitrogen content (titrimetric method after distillation)
肥料 化学分析 氮的测定 总氮含量的测定方法（蒸馏后滴定法）

1986-07-31

肥料中氨态氮含量的测定 蒸馏后滴定法
Fertilizers--Determination of ammoniacal nitrogen content--Titrimetric method after distillation

2000-07-31

Карбамид (мочевина). Определение содержания азота. Титриметрический метод после дистилляции
工业用尿素氮含量的测定 蒸馏后滴定法

2013-11-05

Fertilizers. Chemical analysis. Determination of nitrogen-Determination of ammoniacal nitrogen, titrimetric method after distillation
肥料 化学分析 氮的测定 蒸馏后滴定法测定氨氮

1982-07-30

Steel and iron — Determination of nitrogen content — Titrimetric method after distillation
钢铁及粉煤灰；氮含量的测定——蒸馏后滴定法

1993-06-24

Fertilizers — Determination of ammoniacal nitrogen content — Titrimetric method after distillation
肥料和灰分；氨态氮含量的测定——蒸馏后滴定法

1981-05-01

황산 암모늄(산업용) — 암모니아성 질소 정량 — 증류 후 적정법
工业用硫酸铵 - 氨氮含量的测定 - 蒸馏后滴定法

2017-12-29

황산 암모늄(산업용) — 암모니아성 질소 정량 — 증류 후 적정법
工业用硫酸铵.氨态氮含量的测定.蒸馏后滴定法

2017-12-29

无机化工产品中总氮含量测定的通用方法 蒸馏-酸碱滴定法
Inorganic chemicals for industrial use - General method for the determination of total nitrogen content - Distillation-acid-base titrations method

2009-06-02