13.060.50 水的化学物质检验 标准查询与下载

ISO/DIS 20236:2023 水质高温催化氧化燃烧后总有机碳（TOC）、溶解有机碳（DOC）、总结合氮（TN b）和溶解结合氮（DN b）的测定

Water quality — Determination of total organic carbon (TOC), dissolved organic carbon (DOC), total bound nitrogen (TN b) and dissolved bound nitrogen (DN b) after high temperature catalytic oxidative combustion

ISO/CD 18724:2023 水质 水中溶解六价铬的测定 光度法

Water quality — Determination of dissolved chromium(VI) in water — Photometric method

ISO 23256:2023 水质 多氯二苯并-对-二恶英和多氯联苯的选定同系物的检测 使用流式免疫传感器技术的方法

This document specifies methods and principles for detection of selected congeners of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated biphenyls (PCBs) in water and wastewater using a flow immunosensor. The flow immunosensor utilizes antibodies specific to 2,3,7,8-tetrachlorodibenzo- p-dioxin (2,3,7,8-TCDD) and 3,3’,4,4’,5-pentachlorobiphenyl (3,3’,4,4’,5-PeCB), which have the highest toxic equivalent factor (TEF) value among the congeners of each of PCDDs and PCBs. The method is applicable to timely monitoring of selected congeners of 2,3,7,8-TCDD and 3,3’,4,4’,5-PeCB in water and wastewater to prioritize those for subsequent confirmatory determination. This document specifies practical methods and procedures for sampling, extraction, clean-up, measurement in a flow immunosensor, data processing and validation of measurement results. The combined use of automated instruments for extraction, clean-up, and flow immunosensing can reduce time-consumption and labour-intensity, while providing reproducible precise data. This method can provide the lower limit of quantification (LOQ) for 2,3,7,8-TCDD and 3,3’,4,4’,5-PeCB of 28 pg/l and 152 pg/l, respectively at 20 % or less of coefficient variation (CV) depending on sampling, extraction, clean-up and measurement conditions.

Water quality. Detection of selected congeners of polychlorinated dibenzo-p-dioxins and polychlorinated biphenyls. Method using a flow immunosensor technique

KS I ISO 10530-2023 水质.溶解硫化物的测定.亚甲蓝光度法

Water quality — Determination of dissolved sulfide — Photometric method using methylene blue

KS I ISO 10304-1-2023 水质.用离子液相色谱法测定溶解阴离子.第1部分:溴化物、氯化物、氟化物、硝酸盐、亚硝酸盐、磷酸盐和硫酸盐的测定

Water quality — Determination of dissolved anions by liquid chromatography of ions — Part 1: Determination of bromide, chloride, fluoride, nitrate, nitrite, phosphate and sulfate

T/GXAS 493-2023 水质 8种喹诺酮类抗生素的测定 高效液相色谱-串联质谱法

本文件描述了使用高效液相色谱-串联质谱法测定水中8种喹诺酮类（沙星类）抗生素的方法。  本文件适用于地表水、生活污水中麻保沙星（Marbofloxacin）、氟罗沙星（Fleroxacin）、氧氟沙星（Ofloxacin）、恩诺沙星（Enrofloxacin）、奥比沙星（Orbifloxacin）、沙氟沙星（Sarafloxacin）、双氟哌酸（Difloxacin）和司帕沙星（Sparfloxacin）共8种喹诺酮类抗生素的测定，其他喹诺酮类化合物经适用性验证可参照执行。  当进样体积为5.0 μg时，直接进样法的方法检出限为1.1 μg/L～1.7 μg/L，测定下限为4.4 μg/L～6.8 μg/L；当富集样品体积为200 mL时，浓缩后定容体积为1.0 mL，进样体积为5.0 μL时，固相萃取法的方法检出限为4.0 ng/L～10.2 ng/L，测定下限为16.0 ng/L～40.8 ng/L。详见附录A。

Water quality—Determination of 8 quinolones by high performance liquid chromatography—tandem mass spectrometry method

T/GXAS 492-2023 水质 2种林可酰胺类和4种大环内酯类抗生素的测定 高效液相色谱-串联质谱法

本文件描述了使用高效液相色谱-串联质谱法测定水中2种林可酰胺类和4种大环内酯类抗生素的方法。  本文件适用于地表水、生活污水中林可霉素（Lincomycin）、克林霉素（Clindamycin）、竹桃霉素（Oleandomycin）、泰乐霉素（Tylosin）、吉他霉素（Leucomycin A5）和交沙霉素（Josamycin）共2种林可酰胺类和4种大环内酯类抗生素的测定，其他林可酰胺类和大环内酯类化合物经适用性验证可参照执行。  当进样体积为5.0 μL时，直接进样法的方法检出限为1.1 μg/L～1.6 μg/L，测定下限为4.4 μg/L～6.4 μg/L；当富集样品体积为200 mL时，浓缩后定容体积为1.0 mL，进样体积为5.0 μL时，固相萃取法的方法检出限为2.4 ng/L～9.7 ng/L，测定下限为9.6 ng/L～38.8 ng/L。详见附录A。

Water quality—Determination of 2 lincosamides and 4 macrolieds by high performance liquid chromatography—tandem mass spectrometry method

ASTM D7485-23 用液相色谱/串联质谱法测定环境水中壬基酚、对叔辛基酚、壬基酚单乙氧基化物和壬基酚二乙氧基化物的标准试验方法

1.1  This test method covers the determination of nonylphenol (NP), nonylphenol ethoxylate (NP1EO), nonylphenol diethoxylate (NP2EO), and octylphenol (OP), extracted from water utilizing solid phase extraction (SPE), separated using liquid chromatography (LC) and detected with tandem mass spectrometry (MS/MS). These compounds are qualitatively and quantitatively determined by this method. This method adheres to single reaction monitoring (SRM) mass spectrometry. 1.2  The method detection limit (MDL) and reporting limit (RL) for NP, NP1EO, NP2EO, and OP are listed in Table 1 . 1.3  The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4  This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5  This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Determination of Nonylphenol, p-tert-Octylphenol, Nonylphenol Monoethoxylate and Nonylphenol Diethoxylate in Environmental Waters by Liquid Chromatography/Tandem Mass Spectrometry

T/GXAS 494-2023 水质 7种青霉素的测定 高效液相色谱-串联质谱法

本文件描述了使用高效液相色谱-串联质谱法测定水中7种青霉素的方法。  本文件适用于地表水、生活污水中青霉素G（Penicillin G）、甲氧西林（Meticillin）、阿洛西林（Azlocillin）、哌拉西林（Piperacillin）、青霉素V（Penicillin V）、氯唑西林（Cloxacillin）和双氯西林（Dicloxacillin）共7种青霉素的测定，其他青霉素类化合物经适用性验证可参照执行。  当进样体积为5.0 μL时，直接进样法的方法检出限为1.1 μg/L～1.7 μg/L，测定下限为4.4 μg/L～6.8 μg/L；当富集样品体积为200 mL时，浓缩后定容体积为1.0 mL，进样体积为5.0 μL时，固相萃取法的方法检出限为2.7 ng/L～11.0 ng/L，测定下限为10.8 ng/L～44.0 ng/L。详见附录A。 

Water quality—Determination of 7 penicillins by high performance liquid chromatography—tandem mass spectrometry method

ASTM D7574-23 用液相色谱/串联质谱法测定环境水中双酚A的标准试验方法

1.1 This test method covers the determination of bisphenol A (BPA) extracted from water utilizing solid phase extraction (SPE), separated using liquid chromatography (LC) and detected with tandem mass spectrometry (MS/MS). BPA is qualitatively and quantitatively determined by this method. This test method adheres to multiple reaction monitoring (MRM) mass spectrometry. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 The method detection limit (MDL) and reporting limit (RL) for BPA are listed in Table 1. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Determination of Bisphenol A in Environmental Waters by Liquid Chromatography/Tandem Mass Spectrometry

ASTM D7644-23 液相色谱法/串联质谱法（LC/MS/MS）测定水中溴敌隆、溴二氟康、敌鼠酮和华法林的标准试验方法

1.1 This test method covers the determination of bromadiolone, brodifacoum, diphacinone and warfarin (referred to collectively as rodenticides in this test method) in water by direct injection using liquid chromatography (LC) and detected with tandem mass spectrometry (MS/MS). These analytes are qualitatively and quantitatively determined by this test method. This test method adheres to multiple reaction monitoring (MRM) mass spectrometry. 1.2 The Detection Verification Level (DVL) and Reporting Range for the rodenticides are listed in Table 1. 1.2.1 The DVL is required to be at a concentration at least 3 times below the Reporting Limit (RL) and have a signal/ noise ratio greater than 3:1. Fig. 1 displays the signal/noise ratios of the primary single reaction monitoring (SRM) transitions, and Fig. 2 displays the confirmatory SRM transitions at the DVLs for the rodenticides. 1.2.2 The reporting limit was calculated from the concentration of the Level 1 calibration standard, as shown in Table 4, accounting for the dilution of a 40 mL water sample up to a final volume of 50 mL with methanol to ensure analyte solubility. 1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Determination of Bromadiolone, Brodifacoum, Diphacinone and Warfarin in Water by Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS)

ASTM D8024-23 多重反应监测液相色谱/质谱法（LC/MS/MS）测定水中（三正丁基）正十四烷基氯化鏻（TTPC）的标准试验方法

1.1 This test method covers the determination of (Tri-nbutyl)-n-tetradecylphosphonium chloride (TTPC) in water by dilution with acetone, filtration and analysis by liquid chromatography/tandem mass spectrometry. This test method is not amenable for the analysis of isomeric mixtures of Tributyl-tetradecylphosphonium chloride. TTPC is a biocide that strongly adsorbs to soils.2 The water samples are prepared in a solution of 75 % acetone and 25 % water because TTPC has an affinity for surfaces and particles. The reporting range for this method is from 100 ng ⁄L to 4000 ng ⁄L. This analyte is qualitatively and quantitatively determined by this method. This test method adheres to multiple reaction monitoring (MRM) mass spectrometry. 1.2 A full collaborative study to meet the requirements of Practice D2777 has not been completed. This test method contains single-operator precision and bias based on singleoperator data. Publication of standards that have not been fully validated is done to make the current technology accessible to users of standards, and to solicit additional input from the user community. 1.3 The Method Detection Limit3 (MDL) and Reporting Range4 for the target analyte are listed in Table 1. 1.3.1 The reporting limit in this test method is the minimum value below which data are documented as non-detects. Analyte detections between the method detection limit and the reporting limit are estimated concentrations and are not reported following this test method. The reporting limit is calculated from the concentration of the Level 1 calibration standard as shown in Table 4 for TTPC after taking into account a 2.5 mL water sample volume and a final diluted sample volume of 10 mL (75 % acetone/25 % water). The final solution volume is 10 mL because a 7.5 mL volume of acetone is added to each 2.5 mL water sample which is shaken and filtered. 1.4 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Determination of (Tri-n-butyl)-n-tetradecylphosphonium chloride (TTPC) in Water by Multiple Reaction Monitoring Liquid Chromatography/Mass Spectrometry (LC/MS/MS)

ASTM D8025-23 用多重反应监测液相色谱-串联质谱法测定水中选定农药的标准试验方法

1.1 This test method covers a method for analysis of selected pesticides in a water matrix by filtration followed with liquid chromatography/electrospray ionization tandem mass spectrometry analysis. The samples are prepared in 20 % methanol, filtered, and analyzed by liquid chromatography/ tandem mass spectrometry. This method was developed for an agricultural run-off study, not for low level analysis of pesticides in drinking water. This method may be modified for lower level analysis. The analytes are qualitatively and quantitatively determined by this method. This method adheres to multiple reaction monitoring (MRM) mass spectrometry. 1.2 A full collaborative study to meet the requirements of Practice D2777 has not been completed. This standard contains single-operator precision and bias based on single-operator data. Publication of standards that have not been fully validated is done to make the current technology accessible to users of standards, and to solicit additional input from the user community. 1.3 A reporting limit check sample (RLCS) is analyzed during every batch to ensure that if an analyte was present in a sample at or near the reporting limit it would be positively identified and accurately quantitated within set quality control limits. A method detection limit (MDL) study was not done for this method, the method detection limits would be much lower than the reporting limits in this method and would be irrelevant. A RLCS was determined to be more applicable for this standard. If this method is adapted to report much lower or near the MDL then a MDL study would be warranted. 1.4 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 The Reporting Range for the target analytes are listed in Table 1. 1.5.1 The reporting limit in this test method is the minimum value below which data are documented as non-detects. The reporting limit is calculated from the concentration of the Level 1 calibration standard as shown in Table 6 after taking into account an 8 mL water sample volume and a final diluted sample volume of 10 mL (80 % water/20 % methanol). 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Determination of Select Pesticides in Water by Multiple Reaction Monitoring Liquid Chromatography Tandem Mass Spectrometry

ASTM D7645-23 用液相色谱法/串联质谱法（LC/MS/MS）测定水中的涕灭威、涕灭磺、涕杀磺、呋喃丹、甲氧基、戊基和硫法诺的标准试验方法

1.1 This test method covers the determination of aldicarb, aldicarb sulfone, aldicarb sulfoxide, carbofuran, methomyl, oxamyl, and thiofanox (referred to collectively as carbamates in this test method) in water by direct injection using liquid chromatography (LC) and detected with tandem mass spectrometry (MS/MS). These analytes are qualitatively and quantitatively determined by this test method. This test method adheres to multiple reaction monitoring (MRM) mass spectrometry. 1.2 The Detection Verification Level (DVL) and Reporting Range for the carbamates are listed in Table 1. 1.2.1 The DVL is required to be at a concentration at least 3 times below the Reporting Limit (RL) and have a signal/ noise ratio greater than 3:1. Fig. 1 displays the signal/noise ratios of the primary single reaction monitoring (SRM) transitions, and Fig. 2 displays the confirmatory SRM transitions at the DVLs for the carbamates. 1.2.2 The reporting limit is the concentration of the Level 1 calibration standard as shown in Table 2 for the carbamates. 1.3 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Determination of Aldicarb, Aldicarb Sulfone, Aldicarb Sulfoxide, Carbofuran, Methomyl, Oxamyl, and Thiofanox in Water by Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/

ASTM D3868-15(2023) 微咸水、海水和盐水中氟离子的标准试验方法

1.1 This test method2 covers the determination of soluble fluoride ions in brackish water, seawater and brines by use of a fluoride selective electrode. 1.2 Samples containing from 1.0 to 25 mg/L can be analyzed by this test method. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Fluoride Ions in Brackish Water, Seawater, and Brines

ASTM D5173-15(2023) 通过氧化和检测产生的二氧化碳在线监测水中总有机碳的标准指南

1.1 This guide covers the selection, establishment, and application of monitoring systems for carbon and carbon compounds by on-line, automatic analysis, and recording or otherwise signaling of output data. The system chosen will depend on the purpose for which it is intended (for example, regulatory compliance, process monitoring, or to alert the user to adverse trends) and on the type of water to be monitored (low purity or high purity, with or without suspended particulates, purgeable organics, or inorganic carbon). If it is to be used for regulatory compliance, the test method published or referenced in the regulations should be used in conjunction with this guide and other ASTM test methods. This guide covers carbon concentrations of 0.05 µg/L to 50 000 mg/L. Low end sensitivity and quantitative results may vary among instruments. This guide covers the on-line measurement techniques listed in Table 1. Additional laboratory test methods are available: Test Methods D4129, D4839, D5904, D6317, and D7573. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Guide for On-Line Monitoring of Total Organic Carbon in Water by Oxidation and Detection of Resulting Carbon Dioxide

ASTM D3875-15(2023) 微咸水、海水和盐水中碱度的标准试验方法

1.1 This test method covers the determination of alkalinity in brackish water, seawater, and brines. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Alkalinity in Brackish Water, Seawater, and Brines

ASTM D4458-15(2023) 微咸水、海水和盐水中氯离子的标准试验方法

1.1 This test method2 is applicable to the measurement of chloride in highly mineralized waters such as oil field brines, seawater, and brackish water. The test method is based upon the titration of chloride with silver nitrate, using a visual indicator. 1.2 Samples containing from 10 mg to 150 mg of chloride can be analyzed by this test method. These levels are achieved by dilution as described in the test method. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 It is the user’s responsibility to assure the validity of the method for untested types of water. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for Chloride Ions in Brackish Water, Seawater, and Brines

ASTM D3869-15(2023) 微咸水、海水和盐水中碘化物和溴离子的标准试验方法

1.1 These test methods2 cover the determination of soluble iodide and bromide ions, or both, in brackish water, seawater, and brines. Four test methods are given as follows: 1.1.1 Test Method A for both Iodide and Bromide Ions— Volumetric, for concentrations from 0.2 mg ⁄L to 2000 mg/L iodide and from 5 mg ⁄L to 6500 mg/L bromide (Sections 7 – 15). 1.1.2 Test Method B for Iodide Ion—Colorimetric, for concentrations from 0.2 mg ⁄L to 2000 mg ⁄L iodide (Sections 16 – 25). 1.1.3 Test Method C for Iodide Ion—Selective electrode, for concentrations from 1 mg ⁄L to 2000 mg/L iodide (Sections 26 – 34). 1.1.4 Test Method D for Bromide Ion—Colorimetric, for concentrations from 40 mg ⁄L to 6500 mg/L bromide (Sections 35 – 44). 1.2 Test Method A is intended for use on all brackish waters, seawaters, and brines that contain appreciable amounts of iodide or bromide ions or both. Test Methods B, C, and D, because of their rapidity and sensitivity, are recommended for the analysis of brackish waters, seawaters, and brines in the field and in the laboratory. 1.3 Samples containing from 0.2 mg ⁄L to 2000 mg ⁄L of iodide or 5 mg ⁄L to 6500 mg ⁄L of bromide may be analyzed by these methods. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see 20.2 and 39.2. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Methods for Iodide and Bromide Ions in Brackish Water, Seawater, and Brines

ASTM D7126-15(2023) 二氧化硅在线比色测量的标准试验方法

1.1 This test method covers the on-line determination of soluble silica in water by colorimetric analysis using the molybdenum blue method, also known as the heteropoly blue method. 1.2 This test method is applicable for silica determination in water with silica concentrations within 0.5 ppb to 5000 ppb (µg/L). 1.3 This test method covers the determination of soluble silica SiO2 (silicon dioxide) or silicates in water. Soluble silica compounds are considered molybdate reactive silica. This test method does not cover the determination of colloidal or polymeric silica, which is considered non-molybdate reactive silica. 1.4 This test method does not cover the laboratory or grab sample measurement of silica in water. Refer to Test Method D859. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Standard Test Method for On-Line Colorimetric Measurement of Silica