G21 化肥、化学土壤调理剂 标准查询与下载

NF U44-001:1988 钙肥和/或镁肥.类型和规范

Calcium and/or magnesium liming materials. Types and specifications.

BS 5551-4.2.3:1987 肥料.第4部分:化学分析.第2节:磷的测定.第3小节:磷含量测定方法(喹啉二磷化钼重量分析法)

Specifies reagents, apparatus, procedure and reporting of results.

Fertilizers - Chemical analysis - Determination of phosphorus - Method for determination of phosphorus content (quinoline molybdophosphate gravimetric method)

NF U44-173:1986 肥料.钙和镁改良剂.中和值的测定

Fertilizers. Calcium and magnesium ameliorators. Determination of neutralizing value.

NF U42-771:1986 肥料.硫酸酐总含量和溶解含量的测定

Fertilizers. Determination of the sulfuric anhydrique content total and soluble.

NF U44-174:1986 肥料.钙和镁改良剂.碳酸盐溶解度的测定

Fertilizers. Calcium and magnesium ameliorators. Determination of carbonate solubility.

NF U42-810:1986 多孔肥料.颗粒表观比重的测定

Porous fertillzers - Determination of granule apparent specific gravity

NF U44-146:1985 含钙和(或)镁的土壤改良剂.钙和(或)镁含量的测定.乙二胺四醋酸铬合滴定法

CALCIUM AND/OR MAGNESIUM LIMING MATERIALS. DETERMINATION OF CALCIUM AND MAGNESIUM. EDTA COMPLEXOMETRIC METHOD.

NF U42-125:1985 肥料.在氢氧化钠作用下其它物质释放出的氨气中测定氨态氮的含量.滴定法

Fertilizers. Determination of ammoniacal nitrogen content in the presence of other substances which release ammonia when treated with sodium hydroxide. Titrimetric method.

NF U42-151:1984 肥料.氮总含量的测定.蒸馏滴定法

Fertilizers. Determination of total nitrogen content. Titrimetric method after distillation.

NF U44-140:1984 肥料和土壤改良剂.钙和镁用盐酸侵蚀法增溶

Fertilizers and soils conditioners. Solubilizing of calcium and magnesium by hydrochloric attack.

NF U44-148:1984 肥料和土壤改良剂.用原子吸收光谱法测定钙

Fertilizers and soils conditioners. Determination of calcium by atomic absorption spectrometric method.

NF U44-147:1984 肥料和土壤改良剂.钙-egta络合滴定法测定

Fertilizers and soils conditioners. Determination of calcium-EGTA complexometric method.

NF U44-145:1984 肥料.镁含量的测定.原子吸收光谱分析法

FERTILIZERS AND SOILS CONDITIONERS. DETERMINATION OF MAGNESIUM BY ATOMIC ABSORPTION SPECTROMETRIC METHOD.

ISO 7851:1983 肥料和土壤调理剂 分类 三种语言版

Establishes a classification system. It includes an explanation of the meaning of each heading and clearly assigns each material to an appropriate group.

Fertilizers and soil conditioners; Classification Trilingual edition

NF U42-201:1969 天然矿物磷酸盐.磷酸酐的全部溶解

Natural mineral phosphates. Dissolving of the total phosphoric anhydride.

NF U42-200:1969 农用产品.天然矿物磷酸盐和肥料.不同形式磷酸酐的定量测定

Products used in agriculture. Natural mineral phosphates and fertilizers. Quantity determination of different forms of phosphoric anhydride. General presentation.

NF U42-212:1969 肥料.高炉炉渣.从柠檬酸试剂中萃取溶解的磷酸酐

Fertilizers. Blast furnace slag. Extraction of phosphoric anhydride soluble in citric acid reagent.

NF U42-117:1965 家用产品.甲类氮肥.氮含量的测定

Products used in agriculture. Fertilizers. Determination of nitrogen content in class a nitrogenous fertilizers.

NF U42-119:1965 家用产品.丙类氮肥.氮含量的测定

Products used in agriculture. Determination of nitrogen content in class C nitrogenous fertilizers.

NF U42-118:1965 家用产品.乙类氮肥.氮含量的测定

Products used in agriculture. Determination of nitrogen content in class B nitrogenous fertilizers.