标准号 |
中文名称 |
英文名称 |
| NF T20-281-1968 |
硝酸的化学分析.总酸度的测定 |
CHEMICAL ANALYSIS OF NITRIC ACID. DETERMINATION OF TOTAL ACIDITY. |
| NF T20-283-1968 |
硝酸的化学分析.硝化物的测定 |
CHEMICAL ANALYSIS OF NITRIC ACID. DETERMINATION OF NITROUS COMPOUNDS. |
| NF T20-284-1970 |
硝酸的化学分析.氯的电位滴定法 |
CHEMICAL ANALYSIS OF NITRIC ACID. POTENTIOMETRIC DETERMINATION OF CHLORIDES. |
| NF T20-285-1970 |
硝酸的化学分析.氯的浊度计测定 |
(CHEMICAL ANALYSIS OF NITRIC ACID. TURBIDIMETRIC DETERMINATION OF CHLORIDES.) |
| NF T20-286-1982 |
化学产品.工业硝酸.氨氮含量的测定 |
(NITRIC ACID FOR INDUSTRIAL USE. DETERMINATION OF AMMONIACAL NITROGEN CONTENT. SPECTROPHOTOMETRIC METHOD.) |
| NF T20-287-1982 |
化学产品.工业硝酸.硫酸盐含量的测定.还原法和滴定法 |
(NITRIC ACID FOR INDUSTRIAL USE. DETERMINATION OF SULPHATE CONTENT. METHOD BY REDUCTION AND TITRIMETRY.) |
| NF T20-291-1982 |
化学产品.工业用硫酸和发烟硫酸.发烟硫酸中游离三氧化硫成分的计算和总酸度的测定.滴定法 |
(Sulphuric acid and oleum for industrial use. Determination of total acidity, and calculation of free sulphur trioxide content of oleum. Titrimetric method.) |
| NF T20-292-1968 |
硫酸和发烟硫酸的化学分析.熔烧残留物的测定 |
(CHEMICAL ANALYSIS OF SULPHURIC ACID AND OLEUM. DETERMINATION OF ASH.) |
| NF T20-293-1970 |
硫酸和发烟硫酸的化学分析.二氧化硫的测定 |
(SULFURIC ACID AND OLEUMS FOR INDUSTRIAL USE. DETERMINATION OF SULPHUR DIOXYDE CONTENT.) |
| NF T20-294-1982 |
化学产品.工业硫酸.氯含量的测定.电位滴定法 |
(Sulphuric acid for industrial use. Determination of chlorides content. Potentiometric method.) |
| NF T20-295-1968 |
硫酸和发烟硫酸的化学分析.总氮量的测定 |
(CHEMICAL ANALYSIS OF SULPHURIC ACID AND OLEUM. DETERMINATION OF TOTAL NITROGEN.) |
| NF T20-296-1970 |
硫酸和发烟硫酸的化学分析.硝态氮的测定 |
(CHEMICAL ANALYSIS OF SULPHURIC ACID AND OLEUMS. DETERMINATION OF NITROUS NITROGEN AND NITRIC NITROGEN.) |
| NF T20-297-1971 |
硫酸和发烟硫酸的化学分析.氨氮的测定 |
CHEMICAL ANALYSIS OF SULPHURIC ACID AND OLEUM. DETERMINATION OF AMMONIACAL NITROGEN. SPECTROPHOTOMETRIC METHOD. |
| NF T20-298-1982 |
化学产品.工业硫酸和发烟硫酸.砷含量的测定.二乙基二硫代氨基甲酸银光度法 |
SULPHURIC ACID FOR INDUSTRIAL USE. DETERMINATION OF ARSENIC CONTENT. SILVER DIETHYLDITHIOCARBAMATE PHOTOMETRIC METHOD. |
| NF T20-331-1984 |
工业脱水氟化氢.试验方法 |
ANHYDROUS HYDROGEN FLUORIDE FOR INDUSTRIAL USE. METHODS OF TEST. |
| NF T20-337-1984 |
工业用含水氢氟酸.取样和试验方法 |
Aqueous hydrofluoric acid for industrial use. Sampling and methods of test. |
| NF T20-341-1986 |
工业氨水.试验方法 |
Ammoniac solution for industrial use. Test methods. |
| NF T20-342-1986 |
工业液化氨.试验方法 |
Liquefied anhydrous ammoniac industrial use. Test methods. |
| NF T20-351-1978 |
工业或农业用氯化钾.湿度的测定.重量法 |
POTASSIUM CHLORIDE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF MOISTURE CONTENT.GRAVIMETRIC METHOD. |
| NF T20-352-1978 |
工业或农业用氯化钾.钾含量的测定.火焰发射分光光度法 |
POTASSIUM CHLORIDE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF POTASSIUM CONTENT.FLAME EMISSION SPECTROPHOTOMETRIC METHOD. |
| NF T20-353-1978 |
工业氯化钾.不溶于水的物质的测定 |
POTASSIUM CHLORIDE FOR INDUSTRIAL USE.DETERMINATION OF WATER INSOLUBLE MATTER. |
| NF T20-354-1978 |
工业氯化钾.氯含量的测定.汞量滴定法 |
POTASSIUM CHLORIDE FOR INDUSTRIAL USE.DETERMINATION OF CHLORIDE CONTENT.MERCURIMETRIC METHOD. |
| NF T20-355-1978 |
工业氯化钾.钠含量的测定.火焰发射分光光度法 |
POTASSIUM CHLORIDE FOR INDUSTRIAL USE.DETERMINATION OF SODIUM CONTENT.FLAME EMISSION SPECTROPHOTOMETRIC METHOD). |
| NF T20-356-1978 |
工业或农业用氯化钾.钾含量的测定.四苯基硼酸钾重量法 |
POTASSIUM CHLORIDE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF POTASSIUM CONTENT.POTASSIUM TETRAPHENYLBORATE GRAVIMETRIC METHOD. |
| NF T20-359-1978 |
工业或农业用氯化钾.钾含量的测定.四苯基硼酸钠滴定法 |
POTASSIUM CHLORIDE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF POTASSIUM CONTENT.SODIUM TETRAPHENYLBORATE TITRIMETRIC METHOD. |
| NF T20-361-1978 |
工业或农业用硫酸钾.105℃时质量损失的测定 |
POTASSIUM SULPHATE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF LOSS OF MASS A 105 DEGREES C. |
| NF T20-362-1978 |
工业或农业用硫酸钾.钾含量的测定.火焰发射分光光度法 |
POTASSIUM SULPHATE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF POTASSIUM CONTENT.FLAME EMISSION SPECTROPHOTOMETRIC METHOD. |
| NF T20-363-1978 |
工业或农业用硫酸钾.甲基橙酸度的测定 |
POTASSIUM SULPHATE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF ACIDITY TO METHYL ORANGE. |
| NF T20-364-1978 |
工业或农业用硫酸钾.硫酸盐含量的测定.钡酸盐重量法 |
POTASSIUM SULPHATE FOR INDUSTRIAL USE.DETERMINATION OF SULPHATE CONTENT.BARYUM SULPHATE GRAVIMETRIC METHOD. |
| NF T20-365-1978 |
工业硫酸钾.氯含量的测定.汞量滴定法 |
POTASSIUM SULPHATE FOR INDUSTRIAL USE.DETERMINATION OF CHLORIDE CONTENT.MERCURIMETRIC METHOD. |
| NF T20-366-1978 |
工业或农业用硫酸钾.钾含量的测定.四苯基硼酸钾重量法 |
POTASSIUM SULPHATE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF POTASSIUM CONTENT.GRAVIMETRIC METHOD AS POTASSIUM TETRAPHENYLBORATE. |
| NF T20-367-1978 |
工业或农业用硫酸钾.钾含量的测定.四苯基硼酸钠容量计法 |
POTASSIUM SULPHATE FOR INDUSTRIAL OR AGRICULTURAL USE. DETERMINATION OF POTASSIUM CONTENT.SODIUM TETRAPHENYLBORATE VOLUMETRIC METHOD. |
| NF T20-371-1977 |
工业氢氧化钾.取样.试验取样.测定某些成分用主要溶液的制备 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. SAMPLING. TEST SAMPLE. PREPARATION OF THE MAIN SOLUTION FOR CARRYING OUT CERTAIN DETERMINATIONS. |
| NF T20-372-1969 |
氢氧化钾的化学分析.钾含量的测定.（火焰光度法） |
CHEMICAL ANALYSIS OF POTASSIUM HYDROXIDE. DETERMINATION OF POTASSIUM (FLAME PHOTOMETRY METHOD). |
| NF T20-373-1977 |
工业氢氧化钾.铁含量的测定.１，１０－菲绕啉光度法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF IRON CONTENT. 1,10-PHENANTHROLINE PHOTOMETRIC METHOD. |
| NF T20-374-1977 |
工业氢氧化钾.氯含量的测定.汞量滴定法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF CHLORIDES CONTENT. MERCURIMETRIC METHOD. |
| NF T20-375-1977 |
工业氢氧化钾.氯含量的测定.光度法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF CHLORIDES CONTENT. PHOTOMETRIC METHOD. |
| NF T20-376-1969 |
氢氧化钾的化学分析.钾含量的重量法 |
CHEMICAL ANALYSIS OF POTASSIUM HYDROXIDE. GRAVIMETRIC DETERMINATION OF POTASSIUM. |
| NF T20-377-1977 |
工业氢氧化钾.钠含量的测定.火焰发射分光光度法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF SODIUM CONTENT. FLAME EMISSION SPECTROPHOTOMETRIC METHOD. |
| NF T20-378-1977 |
工业氢氧化钾.二氧化碳含量的测定.滴定法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF CARBON DIOXIDE CONTENT. TITRIMETRIC METHOD. |
| NF T20-379-1969 |
氢氧化钾的化学分析.钾含量的容量分析法 |
CHEMICAL ANALYSIS OF POTASSIUM HYDROXIDE. VOLUMETRIC DETERMINATION OF POTASSIUM. |
| NF T20-380-1977 |
工业氢氧化钾.溶液浓度的测定 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. METHOD OF ASSAY. |
| NF T20-381-1977 |
工业氢氧化钾.碳酸盐含量的测定.气体定量分析法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF CARBONATES CONTENT. GAS-VOLUMETRIC METHOD. |
| NF T20-382-1977 |
工业氢氧化钾.硫酸盐含量的测定.硫酸钡的重量法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF SULPHATE CONTENT. BARYUM SULPHATE GRAVIMETRIC METHOD. |
| NF T20-383-1977 |
工业氢氧化钾.二氧化硅含量的测定.还原硅钡酸盐光度法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF SILICA CONTENT. REDUCED MOLYBDOSILICATE PHOTOMETRIC METHOD. |
| NF T20-384-1977 |
工业氢氧化钾.二氧化硅含量的测定.喹啉硅钼酸盐沉淀重量法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF SILICA CONTENT. GRAVIMETRIC METHOD BY PRECIPITATION OF QUINOLINE MOLYBDOSILICATE. |
| NF T20-385-1977 |
工业氢氧化钾.钙含量的测定.ＥＤＴＡ综合分析法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM CONTENT. EDTA (DISODIUM SALT) COMPLEXOMETRIC METHOD. |
| NF T20-386-1977 |
工业氢氧化钾.钙和镁含量的测定.火焰原子吸收分光光度法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM AND MAGNESIUM CONTENTS. FLAME ATOMIC ABSORPTION METHOD. |
| NF T20-387-1977 |
工业氢氧化钾.硫化物含量的测定.还原法和滴定法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF SULPHUR COMPOUNDS. METHOD BY REDUCTION AND TITRIMETRY. |
| NF T20-388-1977 |
工业氢氧化钾.钠含量的测定.醋酸铀和醋酸镁重量法 |
POTASSIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF SODIUM. GRAVIMETRIC METHOD USING URANYL ACETATE AND MAGNESIUM ACETATE. |
| NF T20-401-1971 |
工业氯化钠.１１０℃时质量损失的测定 |
SODIUM CHLORIDE FOR INDUSTRIAL USE. DETERMINATION OF THE LOSS OF MASS AT 110 DEGREES C. |
| NF T20-402-1982 |
工业氯化钠.不溶于水或不溶于酸的物质的测定和含量测定用几种主要溶液的制备 |
Sodium chloride for industrial use. Determination of matter insoluble in water or in acid and preparation of principal solutions for other determination. |
| NF T20-403-1971 |
工业氯化钠.氯含量的测定.（汞量滴定法） |
SODIUM CHLORIDE FOR INDUSTRIAL USE. DETERMINATION OF CHLORIDES. (MERCURIMETRIC METHOD). |
| NF T20-405-1982 |
工业氯化钠.硫酸盐含量的测定.硫酸钡重量法 |
Sodium chloride for industrial use. Determination of sulphate content. Barium sulphate gravimetric method. |
| NF T20-406-1971 |
工业氯化钠.钙和镁的测定.（乙二胺四醋酸综合分析法.） |
SODIUM CHLORIDE FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM AND MAGNESIUM. (EDTA COMPLEXOMETRIC METHOD). |
| NF T20-407-1971 |
工业氯化钠.钙和镁的测定.（电流计方法） |
SODIUM CHLORIDE FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM AND MAGNESIUM. (AMPEROMETRIC METHOD). |
| NF T20-408-1971 |
工业氯化钠. 的测定.（容量法） |
SODIUM CHLORIDE FOR INDUSTRIAL USE. DETERMINATION OF BROMINE. |
| NF T20-412-1975 |
工业碳酸钠.250℃非挥发性物质和质量损失的测定 |
SODIUM CARBONATE FOR INDUSTRIAL USE - DETERMINATION OF LOSS OF MASSAND OF NON-VOLATILE MATTER AT 250 C |
| NF T20-413-1975 |
工业碳酸钠.５０℃时不溶于水的物质的测定 |
SODIUM CARBONATE FOR INDUSTRIAL USE - DETERMINATION OF MATTER INSOLUBLE IN WATER AT 50 DEGRES C |
| NF T20-414-1975 |
工业碳酸钠.可溶解碱总含量的测定.容量法 |
SODIUM CARBONATE FOR INDUSTRIAL USE - DETERMINATION OF TOTAL SOLUBLE ALKALINITY - VOLUMETRIC METHOD |
| NF T20-415-1975 |
工业碳酸钠.碳酸氢钠含量的测定.容量法 |
(SODIUM CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF SODIUM HYDROGEN CARBONATE. VOLUMETRIC METHOD.) |
| NF T20-416-1975 |
工业碳酸钠.氯含量的测定.汞液滴定法 |
(SODIUM CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF CHLORIDE CONTENT. MERCURIMETRIC METHOD.) |
| NF T20-417-1975 |
工业碳酸钠.硫酸盐含量的测定.硫酸钡重量法 |
(SODIUM CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF SULPHATE CONTENT. BARIUM SULPHATE GRAVIMETRIC METHOD.) |
| NF T20-418-1975 |
工业碳酸钠.铁含量的测定.１，１０－菲绕啉光度分析法 |
(SODIUM CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF IRON CONTENT. 1,10 - PHENANTHROLINE PHOTOMETRIC METHOD.) |
| NF T20-421-1976 |
工业氢氧化钠.取样.试样.按给定配量的主要溶液的制备 |
(SODIUM HYDROXYDE FOR INDUSTRIAL USE. SAMPLING. TEST SAMPLE. PREPARATION OF THE MAIN SOLUTION FOR CARRYING OUT CERTAIN DETERMINATIONS.) |
| NF T20-422-1976 |
工业氢氧化钠.滴定度的测定 |
(SODIUM HYDROXYDE FOR INDUSTRIAL USE. METHOD OF ASSAY.) |
| NF T20-423-1976 |
工业氢氧化钠.铁含量的测定.１，１０－菲绕啉光度分析法 |
(SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF IRON CONTENT. 1,10 PHENANTHROLINE PHOTOMETRIC METHOD.) |
| NF T20-424-1976 |
工业氢氧化钠.二氧化硅含量的测定.还原钼酸络合物分光光度法 |
(SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF SILICA CONTENT. REDUCED SILICOMOLYBDIC COMPLEX PHOTOMETRIC METHOD.) |
| NF T20-425-1976 |
工业氢氧化钠.二氧化硅含量的测定.喹啉钼硅酸盐络合物沉淀重量分析法 |
(SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF SILICA CONTENT. GRAVIMETRIC METHOD BY PRECIPITATION OF QUINOLEINE MOLYBDOSILICATE.) |
| NF T20-426-1976 |
工业氢氧化钠.碳酸盐的测定.滴定法 |
(SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF CARBONATES CONTENT. TITRIMETRIC METHOD.) |
| NF T20-427-1976 |
工业氢氧化钠.碳酸盐的测定.气体定量法 |
(SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF CARBONATES CONTENT. GAS VOLUMETRIC METHOD.) |
| NF T20-428-1976 |
工业氢氧化钠.硫化物含量的测定.还原法和滴定法 |
SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF SULPHUR COMPOUNDS. METHOD BY REDUCTION AND TITRIMETRY. |
| NF T20-429-1976 |
工业氢氧化钠.硫酸钡重量法 |
SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF SULPHATE CONTENT. BARIUM SULPHATE GRAVIMETRIC METHOD. |
| NF T20-430-1976 |
工业氢氧化钠.氯化物含量的测定.光度法 |
SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF CHLORIDES CONTENT. PHOTOMETRIC METHOD. |
| NF T20-431-1976 |
工业氢氧化钠.氯化物含量的测定.汞量法 |
SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF CHLORIDES CONTENT. MERCURIMETRIC METHOD. |
| NF T20-432-1976 |
工业氢氧化钠.钙和镁含量的测定.火焰原子吸收法 |
SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM AND MAGNESIUM CONTENTS. FLAME ATOMIC ABSORPTION METHOD. |
| NF T20-433-1976 |
工业氢氧化钠.钙含量的测定.EDTA综合法 |
SODIUM HYDROXYDE FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM CONTENT. EDTA COMPLEXOMETRIC METHOD. |
| NF T20-434-1980 |
工业氢氧化钠.汞含量的测定.双硫 光度法 |
SODIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF MERCURY CONTENT. DITHIZONE PHOTOMETRIC METHOD. |
| NF T20-435-1980 |
工业氢氧化钠.汞含量的测定.无火焰原子吸收分光光度法 |
SODIUM HYDROXIDE FOR INDUSTRIAL USE. DETERMINATION OF MERCURY CONTENT. FLAMELESS ATOMIC ABSORPTION SPECTROMETRIC METHOD. |
| NF T20-441-1976 |
工业碳酸氢钠.碳酸钠含量的测定.电位滴定法 |
SODIUM HYDROGEN CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF SODIUM CARBONATE CONTENT. POTENTIOMETRIC METHOD. |
| NF T20-442-1976 |
工业碳酸氢钠.碳酸钠含量的测定.滴定法 |
SODIUM HYDROGEN CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF SODIUM CARBONATE CONTENT. TITRIMETRIC METHOD. |
| NF T20-443-1976 |
工业碳酸氢钠.碳酸氢钠含量的测定.滴定法 |
SODIUM HYDROGEN CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF SODIUM HYDROGEN CARBONATE. TITRIMETRIC METHOD. |
| NF T20-444-1976 |
工业碳酸氢钠.水分的测定.重量法 |
SODIUM HYDROGEN CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF MOISTURE. GRAVIMETRIC METHOD. |
| NF T20-445-1976 |
工业碳酸氢钠.氯化物含量的测定.汞量滴定法 |
SODIUM HYDROGEN CARBONATE FOR INDUSTRIAL USE. DETERMINATION OF CHLORIDE CONTENT. MERCURIMETRIC METHOD. |
| NF T20-446-1976 |
工业碳酸氢钠.铁含量的测定：１，１０－菲绕啉光度法 |
SODIUM HYDROGEN CARBONAT FOR INDUSTRIAL USE. DETERMINATION OF IRON CONTENT 1,10 PHENANTHROLINE PHOTOMETRIC METHOD. |
| NF T20-451-1976 |
工业硫酸钠.１００℃时质量损失的测定 |
SODIUM SULPHATE FOR INDUSTRIAL USE DETERMINATION OF LOSS IN MASS AT 110 DEGREES C. |
| NF T20-452-1976 |
工业硫酸钠.不溶于酸的物质的测定 |
SODIUM SULPHATE FOR INDUSTRIAL USE. DETERMINATION OF ACID-INSOLUBLE MATTER. |
| NF T20-453-1976 |
工业硫酸钠.氯化物含量的测定.汞液滴定法 |
SODIUM SULPHATE FOR INDUSTRIAL USE. DETERMINATION OF CHLORIDES CONTENT. MERCURIMETRIC METHOD. |
| NF T20-454-1976 |
工业硫酸钠.硫酸盐含量的测定.计算法和硫酸钡重量法 |
SODIUM SULPHATE FOR INDUSTRIAL USE. DETERMINATION OF SULPHATE CONTENT. CALCULATION METHOD AND BARIUM SULPHATE GRAVIMETRIC METHOD. |
| NF T20-455-1976 |
工业硫酸钠.钙含量的测定.ＥＤＴＡ综合法 |
SODIUM SULPHATE FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM CONTENT. EDTA COMPLEXOMETRIC METHOD. |
| NF T20-456-1976 |
工业硫酸钠.铁含量的测定.１，１０－菲绕啉光度法 |
SODIUM SULPHATE FOR INDUSTRIAL USE. DETERMINATION OF IRON CONTENT. 1,10 PHENANTHROLINE PHOTOMETRIC METHOD. |
| NF T20-457-1976 |
工业硫酸钠.酸度或碱度的测定 |
SODIUM SULPHATE FOR INDUSTRIAL USE. DETERMINATION OF ACIDITY OR ALKALINITY. |
| NF T20-458-1976 |
工业硫酸钠.ＰＨ值的测定.电位计法 |
SODIUM SULPHATE FOR INDUSTRIAL USE. MEASUREMENT OF PH. POTENTIOMETRIC METHOD. |
| NF T20-459-1980 |
工业硫酸钠.硫酸钠含量的测定.重量法 |
SODIUM SULPHATE FOR INDUSTRIAL USE. DETERMINATION OF SODIUM SULPHATE CONTENT. GRAVIMETRIC METHOD. |
| NF T20-460-1980 |
工业硫酸钠.钙含量的测定.原子吸收分光光度法 |
SODIUM SULPHATE FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM CONTENT FLAME ATOMIC ABSORPTION SPECTROMETRIC METHOD. |
| NF T20-467-1984 |
工业磷酸.（包括食品工业）.钒的含量的测定 |
Methanol for industrial use. Methods of test. |
| NF T20-468-1984 |
工业磷酸.（包括食品工业）.硫化氢含量的测定.滴定法 |
Phosphoric acid for industrial use (including foodstuffs). Determination of hydrogen sulfide content. Titrimetric method. |
| NF T20-469-1984 |
工业磷酸.高含量可溶硫酸盐的测定.先还原后滴定的方法 |
PHOSPHORIC ACID FOR INDUSTRIAL USE. DETERMINATION OF HIGHER SOLUBLE SULFATE CONTENTS. TITRIMETRIC METHOD AFTER REDUCTION. |
| NF T20-470-1979 |
工业磷酸.取样技术指南 |
PHOSPHORIC ACID FOR INDUSTRIAL USE. GUIDE TO SAMPLING TECHNIQUES. |
| NF T20-471-1973 |
工业磷酸.硫酸盐含量的测定.先还原后滴定的方法 |
PHOSPHORIC ACID FOR INDUSTRIAL USE. DETERMINATION OF SULPHATES. TITRIMETRIC METHOD AFTER REDUCTION. |
| NF T20-472-1973 |
工业磷酸.钙含量的测定.容量法 |
PHOSPHORIC ACID FOR INDUSTRIAL USE. DETERMINATION OF CALCIUM. VOLUMETRIC METHOD. |
| NF T20-473-1973 |
工业磷酸.铁的测定.２，２＇双 啶分光光度法 |
PHOSPHORIC ACID FOR INDUSTRIAL USE. DETERMINATION OF IRON. (2.2`BIPYRIDYL SPECTROPHOTOMETRIC METHOD). |
| NF T20-474-1973 |
工业磷酸.二氧化硅含量的测定.还原钼硅络合物分光光度法 |
PHOSPHORIC ACID FOR INDUSTRIAL USE. DETERMINATION OF SILICA CONTENT. SPECTROPHOTOMETRIC METHOD USING THE REDUCED SILICOMOLYBDIC COMPLEX. |
| NF T20-475-1973 |
工业磷酸.根据NF T20-054方法测定砷含量 |
PHOSPHORIC ACID FOR INDUSTRIAL USE; DETERMINATION FOR ARSENIC CONTENT; SILVER DIETHYLDITHIOCARBAMATE PHOTOMETRIC METHOD. |
| NF T20-476-1973 |
工业磷酸.五氧化二磷总含量的测定.喹啉磷钼酸重量法 |
Phosphoric acid for industrial use. Determination of total phosphoric pentoxide content. Gravimetric method using quinoline phosphomolybdate. |
| NF T20-477-1982 |
工业磷酸.铅含量的测定.原子吸收分光光度法 |
PHOSPHORIC ACID FOR INDUSTRIAL USE. DETERMINATION OF LEAD CONTENT. ATOMIC ABSORPTION SPECTROMETRIC METHOD. |
| NF T20-479-1973 |
工业磷酸和磷酸钠.氟含量的测定（氨甲基－３茜素－Ｎ，Ｎ－二醋酸光度法） |
PHOSPHORIC ACID AND SODIUM PHOSPHATES FOR INDUSTRIAL USE ; DETERMINATION OF FLUORINE CONTENT ; PHOTOMETRIC METHOD. |
| NF T20-480-1979 |
工业磷酸（包括食品工业）.钙含量的测定.火焰原子吸收法 |
Phosphoric acid for industrial use (including foodstuffs). Determination of calcium content. Flame atomic absorption method. |
| NF T20-481-1979 |
工业磷酸（包括食品工业）.氯化物含量的测定.电位滴定法 |
Phosphoric acid for industrial use (including foodstuffs). Determination of chloride content. Potentiometric method. |
| NF T20-482-1979 |
工业磷酸（包括食品工业）.氧化氮含量的测定.二甲苯酚３，４分光光度法 |
Phosphoric acid for industrial use (including foodstuffs. Determination of oxides of nitrogen content ). 3,4-xylenol spectrophotometric method. |
| NF T20-483-1973 |
工业三聚磷酸钠和焦磷酸钠.铁含量的测定.２，２－双 啶分光光度法 |
SODIUM TRIPOLYPHOSPHATE AND PYROPHOSPHATE ; DETERMINATION OF IRONCONTENT ; 2,2`-BIPYRIDYL SPECTROPHOTOMETRIC METHOD. |
| NF T20-484-1973 |
工业三聚磷酸钠和焦磷酸钠.燃烧消耗的测定 |
SODIUM TRIPOLYPHOSPHATE AND PYROPHOSPHATE FOR INDUSTRIAL USE. DETERMINATION OF LOSS ON IGNITION. |
| NF T20-485-1973 |
工业三聚磷酸钠和焦磷酸钠.机械筛后的粒度分析 |
SODIUM TRIPOLYPHOSPHATE AND PYROPHOSPHATE FOR INDUSTRIAL USE. GRANULOMETRIC ANALYSIS BY MECHANICAL SIEVING. |
| NF T20-486-1973 |
工业三聚磷酸钠和焦磷酸钠.五氧化二磷总含量的测定.（喹啉磷钼酸盐的重量法） |
(SODIUM TRIPOLYPHOSPHATE AND PYROPHOSPHATE FOR INDUSTRIAL USE ; DETERMINATION OF TOTAL PHOSPHORIC PENTOXIDE ; GRAVIMETRIC METHOD USING QUINOLINE PHOSPHOMOLYBDATE.) |
| NF T20-487-1979 |
工业用三聚磷酸钠和焦磷酸钠.正磷酸盐的测定.还原钼磷酸盐光度法 |
(SODIUM TRIPOLYPHOSPHATE AND PYROPHOSPHATE FOR INDUSTRIAL USE ; DETERMINATION OF ORTHOPHOSPHATE; PHOTOMETRIC METHOD USING REDUCED PHOSPHOMOLYBDIC COMPLEX.) |
| NF T20-491-1979 |
工业用焦磷酸钠.焦磷酸盐的估定.电位滴定法 |
(SODIUM PYROPHOSPHATE FOR INDUSTRIAL USE.ESTIMATION OF PYROPHOSPHATE CONTENT. POTENTIOMETRIC METHOD.) |
| NF T20-492-1973 |
工褿等姿崮三磷酸钠含量的测定.钴一三乙撑二胺氯化物的重量法 |
(SODIUM TRIPOLYPHOSPHATE FOR INDUSTRIAL USE. ESTIMATION OF TRIPOLYPHOSPHATES CONTENT. COBALT TRIETHYLENEDIAMINE CHLORIDE GRAVIMETRIC METHOD.) |
| NF T20-493-1973 |
工业三磷酸钠.水不溶物质的测定 |
(SODIUM TRIPOLYPHOSPHATE FOR INDUSTRIAL USE. DETERMINATION OF MATTER INSOLUBLE IN WATER.) |
| NF T20-494-1973 |
工业三磷酸钠.pH值的测定.电位滴定法 |
(SODIUM TRIPOLYPHOSPHATE FOR INDUSTRIAL USE. MEASUREMENT OF PH. POTENTIOMETRIC METHOD.) |
| NF T20-495-1973 |
工业三磷酸钠.氯化物含量的测定 |
(SODIUM TRIPOLYPHOSPHATE FOR INDUSTRIAL USE. DETERMINATION OF SODIOM CHLORIDE CONTENT.) |
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