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iso-5667-2-guidance-on-sampling-strategies
Potable Water Microbiological & Chemical Analysis APHA 2540 Total Dissolved Solids (TDS) Testing in WaterAPHA 4500-H+ pH Measurement of Drinking WaterAPHA 9221 Multiple-Tube Fermentation Technique for ColiformsASTM D1067 Acidity and Alkalinity Testing in Water SamplesASTM D1125 Electrical Conductivity Measurement of WaterASTM D1126 Standard Test Method for Turbidity of WaterASTM D1253 Residual Chlorine Testing in Water SamplesASTM D1783 Determination of Nitrate in WaterASTM D1946 Gas Chromatography of Volatile Organic Compounds in WaterASTM D2216 Moisture Content of Soil and RockASTM D2974 Moisture, Ash, and Organic Matter of Sludge by Loss on IgnitionASTM D3370 Determination of Total Organic Halogens in WaterASTM D3559 Determination of Total Phosphorus in WaterASTM D3867 Nitrite and Nitrate Analysis in Potable WaterASTM D512 Chloride Concentration Testing in Water SamplesASTM D512 Total Chloride Ion Determination by TitrationASTM D516-89 Determination of Cyanide in WaterASTM D5176 Measurement of Alkalinity in WaterEN 1622 Chlorine Odor and Taste Testing in Drinking WaterEN 26777 Nitrite Content Analysis in Potable WaterEN ISO 10304-1 Ion Chromatography for Anions in Potable WaterEN ISO 10304-3 Determination of Dissolved Anions by Ion ChromatographyEN ISO 10523 pH Measurement of Water QualityEN ISO 11256 Determination of Total Chromium in WaterEN ISO 11369 Cyanide Content Analysis in Water SamplesEN ISO 11732 Ammonium Testing in Drinking Water via FIAEN ISO 11732 Determination of Ammonium in Water by Flow AnalysisEN ISO 11885 Inductively Coupled Plasma for Metal Analysis in WaterEN ISO 11901 Determination of Bromide in Water SamplesEN ISO 11905-1 Nitrogen Analysis via Devarda’s Method in WaterEN ISO 11905-2 Determination of Nitrogen in Water SamplesEN ISO 14403 Determination of Pesticides in Water by GC-MSEN ISO 5663 Guidelines for Sample Preparation of Water TestingEN ISO 5667-1 Guidance on Sampling Water QualityEN ISO 5667-17 Guidance on Sampling for Particles in WaterEN ISO 5667-21 Sampling of Sediments for Chemical AnalysisEN ISO 7027 Turbidity Testing of Drinking Water SamplesEN ISO 7393-1 Chlorine Quantification Using Titrimetry in WaterEN ISO 7393-2 Free and Total Chlorine Analysis in Drinking WaterEN ISO 7887 Color Determination in Potable Water SamplesEN ISO 8466-1 Water Quality – Determination of pHEN ISO 8467 Permanganate Index Testing in Drinking WaterEPA 110.3 Determination of Phenols in WaterEPA 1604 Enterococci Bacteria Detection in Drinking WaterEPA 1664 Measurement of Oil and Grease in WaterEPA 200.1 Inductively Coupled Plasma-Atomic Emission SpectrometryEPA 200.7 Trace Metal Determination in Drinking Water by ICP-AESEPA 200.8 Trace Elements in Drinking Water Using ICP-MSEPA 200.9 Trace Elements Determination by GFAAS in Drinking WaterEPA 300.0 Inorganic Anions Determination by Ion ChromatographyEPA 300.1 Anions Analysis Including Fluoride and Nitrate in WaterEPA 300.1 Determination of Chloride in Drinking WaterEPA 300.2 Determination of Sulfate in WaterEPA 335.4 Cyanide Measurement in Drinking Water SamplesEPA 350.1 Determination of Chemical Oxygen Demand (COD)EPA 350.2 Measurement of Total Organic Carbon in WaterEPA 353.2 Nitrate-Nitrite Testing in Potable Water SamplesEPA 365.2 Determination of Phenolic Compounds in WaterEPA 410.4 Analysis of Cyanide in Water SamplesEPA 505 Organochlorine Pesticides Analysis in Potable WaterEPA 524.2 Purgeable Organic Compounds Testing in Water SamplesEPA 524.3 VOC Analysis in Potable Water Using GC/MSEPA 524.4 Measurement of Disinfection Byproducts in WaterEPA 531.2 Carbamate Pesticides Detection in Drinking WaterEPA 551.1 Determination of Carbon Tetrachloride in Drinking WaterEPA 552.3 Haloacetic Acids Testing in Potable WaterEPA 600/4-79-020 Colorimetric Analysis of OrthophosphateEPA 600/4-80/014 Chlorophyll-a Determination in WaterEPA 601 Method for Determination of Polychlorinated Biphenyls (PCBs)EPA 608 Pesticides and PCBs Testing in Drinking Water SamplesEPA 608 Pesticides and PCBs Testing in Drinking Water SamplesEPA 625 Methods for Volatile Organic Compounds Analysis in WaterEPA 815-B-17-015 Cryptosporidium and Giardia Detection in WaterEPA 8270 Semi-Volatile Organic Compounds Analysis in WaterEPA 906.0 Determination of Mercury in Water by Cold Vapor Atomic AbsorptionEPA 906.0 Mercury Analysis by Cold Vapor Atomic AbsorptionEPA 906.0 Mercury Determination by CVAASIS 10500 Fluoride Level Compliance Testing in Potable WaterIS 10500 Nitrate Level Analysis in Drinking WaterIS 3025 Part 34 Phenolic Compounds Testing in Potable WaterISO 10530 Measurement of Turbidity in Water SamplesISO 11369 Cyanide Determination in WaterISO 15586 Atomic Absorption for Mercury Detection in WaterISO 15680 VOC Detection by Purge and Trap GC/MS in WaterISO 15681 Determination of Polychlorinated Biphenyls (PCBs) in WaterISO 15705 Determination of Total Organic Carbon in WaterISO 15705 Measurement of Total Organic Carbon (TOC) in WaterISO 16265 Trihalomethane Concentration Testing in Drinking WaterISO 17993 Determination of Mercury in Water by CVAASISO 5667-10 Sampling of WastewatersISO 5667-13 Guidance on Sampling for Cyanobacteria and AlgaeISO 5667-14 Guidance on Sampling for Microorganisms in WaterISO 5667-15 Guidance on Sampling for Metals in WaterISO 5667-18 Guidance on Sampling for Volatile Organic CompoundsISO 5667-19 Guidance on Sampling for Trace ElementsISO 5667-20 Guidance on Sampling for Microcystins and Other CyanotoxinsISO 5667-3 Sampling Protocols for Microbiological Water TestingISO 5667-4 Guidance on Sampling Preservation and HandlingISO 5667-5 Sampling Strategy for Drinking Water AnalysisISO 5667-6 Water Sampling – Guidance on Sampling TechniquesISO 7028 Sampling of Water for Chemical and Microbiological TestingISO 7887 Water Sample Color Measurement for Quality ControlISO 7888 Electrical Conductivity Testing of Drinking WaterISO 9308-1 E. coli and Coliform Bacteria Testing in Drinking WaterISO 9963-1 Determination of Carbon Dioxide in WaterWHO Guidelines-Based Lead Content Testing in Potable Water

ISO 5667-2 Guidance on Sampling Strategies Laboratory Testing Service Provided by Eurolab

Standard-Related Information

ISO 5667-2:2016 is a laboratory testing service that provides guidance on sampling strategies for the determination of chemical, physical, and biological properties of water. This standard is part of the ISO 5667 series, which covers various aspects of water sampling.

The ISO 5667-2 standard is published by the International Organization for Standardization (ISO) and is available in multiple languages. The standard is designed to provide a framework for selecting appropriate sampling strategies and methods for determining the properties of water.

International and National Standards

ISO 5667-2:2016 is based on several international and national standards, including:

  • ISO 5667-1:2005 - Water quality - Sampling - Part 1: Guidance on the design of sampling programs

  • ISO 5667-3:2005 - Water quality - Sampling - Part 3: Preservation and handling of water samples

  • ASTM D1068-13 - Standard Practice for Sampling Water from Finished Recycled Mixture

  • EN 12602:2014 - Water quality - Sampling - Code of practice for the selection, preservation and transportation of water samples

    • Standard Development Organizations

    The ISO 5667-2 standard is developed by the Technical Committee (TC) 120, which is responsible for developing standards related to water quality. TC 120 is a collaborative effort between national committees from various countries, including Europe, North America, Asia, and others.

    Evolution of Standards

    Standards evolve over time due to changes in technology, regulations, and industry practices. ISO 5667-2:2016 is the latest version of the standard, which replaced the previous edition (ISO 5667-2:1994). The new standard incorporates updated information on sampling strategies, preservation, and handling of water samples.

    Standard Compliance Requirements

    Compliance with ISO 5667-2:2016 is mandatory for laboratories that provide water quality testing services. This includes laboratories that perform chemical, physical, and biological analysis of water samples. The standard provides a framework for selecting appropriate sampling strategies and methods, which ensures the accuracy and reliability of test results.

    Industries and Sectors

    ISO 5667-2:2016 is relevant to various industries and sectors, including:

  • Water utilities

  • Wastewater treatment plants

  • Drinking water treatment plants

  • Industrial processes that use water (e.g., textile, chemical, and food processing)

  • Environmental monitoring agencies

  • Government departments responsible for water quality management

    • Risk Factors and Safety Implications

    The incorrect selection of sampling strategies or methods can lead to inaccurate test results, which may have serious consequences. For example:

  • Inaccurate measurements of water quality parameters (e.g., pH, turbidity) may lead to inadequate treatment processes.

  • Incorrect identification of contaminants in drinking water supplies may pose health risks to consumers.

    • Quality Assurance and Quality Control

    ISO 5667-2:2016 emphasizes the importance of quality assurance and quality control measures during sampling. Laboratories must ensure that their procedures meet the requirements outlined in the standard, which includes:

  • Selection of appropriate sampling strategies

  • Preservation and handling of water samples

  • Testing equipment calibration and maintenance

  • Quality control measures for testing personnel

    • Contribution to Product Safety and Reliability

    Accurate and reliable test results are essential for ensuring product safety and reliability. ISO 5667-2:2016 provides a framework for selecting appropriate sampling strategies, which ensures that water quality parameters are accurately measured.

    Competitive Advantages

    Compliance with ISO 5667-2:2016 can provide several competitive advantages, including:

  • Improved accuracy and reliability of test results

  • Enhanced reputation and credibility among clients

  • Increased customer confidence and trust in laboratory services

  • Better market positioning through certification and accreditation

    • Cost-Benefit Analysis

    While the cost of compliance with ISO 5667-2:2016 may be higher than non-compliant alternatives, the benefits far outweigh the costs. Compliance can lead to:

  • Improved efficiency and productivity

  • Reduced testing errors and rework

  • Increased revenue from improved customer satisfaction

  • Enhanced reputation and credibility among clients

    • Test Conditions and Methodology

    ISO 5667-2:2016 provides detailed guidance on sampling strategies, preservation, and handling of water samples. The standard outlines various methods for selecting appropriate sampling strategies, including:

  • Visual examination of the sample

  • Chemical analysis (e.g., pH, turbidity)

  • Physical analysis (e.g., temperature, pressure)

    • Sampling Strategies

    The standard outlines several sampling strategies, including:

  • Random sampling

  • Stratified sampling

  • Systematic sampling

    • Each strategy has its own advantages and disadvantages, which are discussed in detail in the standard.

    Preservation and Handling of Water Samples

    ISO 5667-2:2016 provides guidance on preserving and handling water samples, including:

  • Storage containers and materials

  • Transportation procedures

  • Preservation methods (e.g., refrigeration, freezing)

    • Testing Equipment Calibration and Maintenance

    The standard emphasizes the importance of testing equipment calibration and maintenance. Laboratories must ensure that their equipment is calibrated regularly to ensure accurate results.

    Quality Control Measures for Testing Personnel

    ISO 5667-2:2016 provides guidance on quality control measures for testing personnel, including:

  • Training and certification programs

  • Equipment inspection and maintenance procedures

  • Quality control records

    • A Sample Calculation Example

    Lets consider a simple example of calculating the sampling rate for a water utility company. Assume the company wants to determine the pH level of its drinking water supply.

    Using the standard, we can select an appropriate sampling strategy (e.g., random sampling) and calculate the required sample size:

  • Population: 1 million liters

  • Desired confidence level: 95

  • Acceptable error margin: 0.5 units

    • The calculation yields a required sample size of 10,000 liters.

    Conclusion

    ISO 5667-2:2016 is an essential standard for laboratories providing water quality testing services. The standard provides guidance on sampling strategies, preservation and handling of water samples, testing equipment calibration and maintenance, and quality control measures for testing personnel.

    Compliance with the standard ensures accurate and reliable test results, which are essential for ensuring product safety and reliability.

    Test Results Example

    Lets consider a simple example of calculating the pH level of a drinking water supply. Assume we collect 10,000 liters of water sample using random sampling strategy.

    Using the standard, we can calculate the pH level as follows:

  • Measurement: pH 7.2 units

  • Acceptable error margin: 0.5 units

    • The test result yields a pH level of 7.2 units, which is within the acceptable range.

    References

    1. ISO 5667-2:2016 - Water quality - Sampling - Part 2: Guidance on the selection and use of sampling methods

    2. ASTM D1068-13 - Standard Practice for Sampling Water from Finished Recycled Mixture

    3. EN 12602:2014 - Water quality - Sampling - Code of practice for the selection, preservation and transportation of water samples

    Appendix

    The following tables provide a summary of the standards requirements:

    Requirement Description

    --- ---

    Sampling strategy Random sampling or stratified sampling

    Sample size 10,000 liters (example)

    Preservation method Refrigeration or freezing

    Testing equipment calibration and maintenance Regular calibration and inspection

    Quality control measures for testing personnel Training and certification programs

    The following figures illustrate the standards requirements:

    Figure 1: Sampling Strategy Selection

  • Random sampling

  • Stratified sampling

    • Figure 2: Sample Size Calculation

  • Population: 1 million liters

  • Desired confidence level: 95

  • Acceptable error margin: 0.5 units

    • Figure 3: Preservation Method Selection

  • Refrigeration

  • Freezing

    • The following tables provide a summary of the standards requirements:

    Requirement Description

    --- ---

    Storage containers and materials Glass or plastic containers with Teflon-coated lids

    Transportation procedures Secure storage containers in a vehicle

    Preservation methods Refrigeration at 4C or freezing at -20C

    The following figures illustrate the standards requirements:

    Figure 4: Testing Equipment Calibration and Maintenance

  • Regular calibration and inspection of testing equipment

  • Documentation of calibration records

    • Figure 5: Quality Control Measures for Testing Personnel

  • Training and certification programs for testing personnel

  • Documentation of quality control records

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