• AS/NZS 4020:2002

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    Testing of products for use in contact with drinking water

    Available format(s):  Hardcopy, PDF 1 User, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  06-30-2017

    Language(s):  English

    Published date:  01-01-2002

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    1 - AS/NZS 4020:2002 TESTING OF PRODUCTS FOR USE IN CONTACT WITH DRINKING WATER
    4 - PREFACE
    5 - CONTENTS
    6 - FOREWORD
    7 - 1 SCOPE
    7 - 2 REFERENCED DOCUMENTS
    9 - 3 DEFINITIONS
    9 - 3.1 Anaerobic adhesive
    9 - 3.2 Colour (true colour)
    9 - 3.3 Composite product
    9 - 3.4 Cytotoxic
    9 - 3.5 Drinking water
    9 - 3.6 End-of-line fitting
    9 - 3.7 Extract (leachate)
    9 - 3.8 Extractant water
    9 - 3.9 Maximum holding water temperature
    9 - 3.10 Mutagenic
    10 - 3.11 Organoleptic
    10 - 3.12 Product
    10 - 3.13 Sample
    10 - 3.14 Scaling factor
    10 - 3.15 Taste panellist
    10 - 3.16 Test water
    10 - 3.17 Threshold dilution
    10 - 3.18 Turbidity
    10 - 3.19 Water fitting
    10 - 4 TEST SAMPLES
    10 - 4.1 Selection and preparation of samples
    11 - 4.2 Range of product sizes
    11 - 4.3 Product exposure
    11 - 5 SCALING FACTORS
    11 - 5.1 General
    12 - 5.2 Determination of scaling factors
    12 - 5.3 Application of scaling factors
    12 - 5.4 Restrictions on the use of scaling factors
    13 - 6 TEST REQUIREMENTS
    13 - 6.1 General
    13 - 6.2 Taste of water extract
    13 - 6.3 Appearance of water extract
    13 - 6.4 Growth of aquatic micro-organisms
    13 - 6.5 Cytotoxic activity of water extract
    13 - 6.6 Mutagenic activity of water extract
    14 - 6.7 Extraction of metals
    14 - 6.7.1 Products in general
    14 - 6.7.2 End-of-line fittings
    14 - 7 HOT WATER TESTS
    17 - APPENDIX A - SAMPLE PREPARATION
    17 - A1 SCOPE
    17 - A2 APPARATUS
    17 - A2.1 Sample storage bags,
    17 - A2.2 Glass plates,
    17 - A2.3 Test containers,
    17 - A2.4 Temperature-measuring device
    17 - A2.5 Relative humidity-measuring device
    17 - A2.6 Glass-encapsulated weights,
    17 - A3 SAMPLES
    17 - A3.1 Nature of samples
    18 - A4 PRODUCT EXPOSURE
    18 - A4.1 In-the-product exposure
    18 - A4.2 Immersion exposure
    19 - A5 SAMPLE TRANSPORT AND STORAGE
    19 - A6 SAMPLE WASHING
    19 - A7 SPECIAL PRODUCTS
    19 - A7.1 General
    19 - A7.2 Elastomeric products
    19 - A7.3 Greases
    19 - A7.4 Coatings
    20 - A7.5 Sealing compounds
    21 - A7.6 Jointing compounds
    21 - A7.7 Solder fluxes
    21 - A7.8 Anaerobic adhesives
    21 - A8 CEMENTITIOUS PRODUCTS
    22 - A9 METAL ALLOYS
    23 - APPENDIX B - SCALING FACTORS-DERIVATION AND APPLICATION
    23 - B1 INTRODUCTION
    23 - B2 CALCULATION OF SCALING FACTORS
    23 - B3 EXAMPLES OF SCALING FACTOR CALCULATIONS
    23 - Example 1: Sealing gasket (immersion exposure)
    24 - Example 2 Sluice valve (in-the-product exposure)
    24 - Example 3 Domestic plumbing systems
    27 - APPENDIX C - TEST METHOD-TASTE OF WATER EXTRACT
    27 - C1 SCOPE
    27 - C2 INTRODUCTION
    27 - C3 PRINCIPLE
    27 - C4 TEST PREMISES
    28 - C5 REAGENTS
    28 - C5.1 Test waters
    28 - C5.2 Sodium hypochlorite solution
    28 - C5.3 Distilled water,
    28 - C6 APPARATUS
    28 - C6.1 Test containers,
    28 - C6.2 Dilution beakers,
    28 - C6.3 Water bath and incubator,
    28 - C6.4 Tasting glass,
    28 - C6.5 Glass-encapsulated weights,
    29 - C7 SELECTION OF TASTE PANELLISTS
    29 - C7.1 Taste panel requirements
    29 - C7.2 Initial sensitivity test
    30 - C7.3 Regular assessment
    30 - C7.4 Personal logs
    30 - C8 CROSS-CONTAMINATION OF SAMPLES
    30 - C9 TEST PROCEDURE
    30 - C9.1 Extraction
    31 - C9.2 Taste test dilutions
    31 - C9.3 Tasting procedure
    32 - C9.4 Extraction procedure using chlorinated water
    32 - C10 EXPRESSION OF RESULTS
    32 - C10.1 Validation
    32 - C10.2 Expression of results
    32 - C11 TEST REPORT
    33 - C12 LIST OF TASTES
    34 - APPENDIX D - TEST METHOD-APPEARANCE OF WATER EXTRACT
    34 - D1 SCOPE
    34 - D2 PRINCIPLE
    34 - D3 REAGENTS
    34 - D3.1 Test water,
    34 - D3.2 Colour matching solutions,
    34 - D3.3 Formazine solutions,
    34 - D4 APPARATUS
    34 - D4.1 Laboratory ware,
    34 - D4.2 Test containers,
    34 - D4.3 Colour measurement apparatus,
    34 - D4.4 Incubator,
    34 - D4.5 Turbidity measurement apparatus,
    34 - D4.6 Glass-encapsulated weights,
    35 - D5 SAMPLES
    35 - D6 TEST PROCEDURE
    35 - D6.1 General
    35 - D6.2 Further extracts
    35 - D7 MEASUREMENT OF COLOUR AND TURBIDITY
    36 - D8 CALCULATIONS
    36 - D9 TEST REPORT
    38 - APPENDIX E - TEST METHOD-GROWTH OF AQUATIC MICRO-ORGANISMS
    38 - E1 SCOPE
    38 - E2 INTRODUCTION
    39 - E3 PRINCIPLE
    39 - E4 TEST PREMISES
    39 - E5 SAFETY
    39 - E6 REAGENTS
    39 - E6.1 General
    39 - E6.2 Inoculum water,
    40 - E6.3 Test water
    41 - E7 APPARATUS
    41 - E7.1 Test containers
    41 - E7.2 Dissolved oxygen meter,
    41 - E7.3 Incubator/chamber,
    41 - E7.4 Glass-encapsulated weights,
    41 - E8 SAMPLES
    41 - E8.1 General requirements
    42 - E8.2 Reference materials
    42 - E9 TEST PROCEDURES
    42 - E9.1 Preparation of the test system
    42 - E9.2 Incubation
    43 - E9.3 Assessment of microbial growth
    43 - E9.4 Measurement of dissolved oxygen for lubricants and lubricated materials
    44 - E10 EXPRESSION OF RESULTS
    44 - E10.1 Calculation of results
    44 - E10.2 Validation of results
    44 - E10.3 Precision
    44 - E11 APPLICATION OF SCALING FACTOR
    44 - E12 TEST REPORT
    46 - APPENDIX F - TEST METHOD-CYTOTOXIC ACTIVITY OF WATER EXTRACT
    46 - F1 SCOPE
    46 - F2 PRINCIPLE
    46 - F3 TEST PREMISES
    46 - F4 REAGENTS
    46 - F4.1 Test water,
    46 - F4.2 Distilled water
    46 - F4.3 Media
    48 - F4.4 Cell line
    48 - F5 APPARATUS
    48 - F5.1 Tissue-culture ware,
    48 - F5.2 Haemocytometer counting chamber,
    48 - F5.3 Test containers,
    48 - F5.4 Incubators,
    48 - F5.5 Glass-encapsulated weights,
    48 - F6 TEST SAMPLES
    48 - F7 TEST PROCEDURE
    48 - F7.1 Introduction
    48 - F7.2 Maintenance of the cell line
    49 - F7.3 Preparation of cell suspension
    49 - F7.4 Extraction procedure
    50 - F7.5 Growth procedure
    50 - F7.6 Microscopic examination
    50 - F7.7 Expression of results
    51 - F8 TEST REPORT
    53 - APPENDIX G - TEST METHOD-MUTAGENIC ACTIVITY OF WATER EXTRACT
    53 - G1 SCOPE
    53 - G2 PRINCIPLE
    53 - G3 TEST PREMISES
    53 - G4 REAGENTS
    53 - G4.1 Test water,
    54 - G4.2 Distilled water
    54 - G4.3 Control mutagens,
    54 - G4.4 Medium,
    54 - G4.5 Bacteria
    54 - G5 APPARATUS
    54 - G5.1 Bacteria-culture ware,
    54 - G5.2 Test containers,
    55 - G5.3 Incubators,
    55 - G5.4 Glass-encapsulated weights,
    55 - G6 TEST SAMPLES
    55 - G7 TEST PROCEDURE
    55 - G7.1 Introduction
    55 - G7.2 Extraction procedure
    55 - G7.3 Modified Ames test
    56 - G7.4 Controls
    56 - G7.5 Interpretation of results
    56 - G8 TEST REPORT
    58 - APPENDIX H - TEST METHOD-EXTRACTION OF METALS
    58 - H1 SCOPE
    58 - H2 LIMIT OF DETECTION AND SENSITIVITY
    58 - H3 PRINCIPLE
    58 - H4 REAGENTS
    58 - H4.1 Test water,
    58 - H4.2 Nitric acid,
    58 - H4.3 Nitric acid,
    58 - H5 APPARATUS
    58 - H5.1 Cleaning
    58 - H5.2 Test containers,
    58 - H5.3 Bottles,
    58 - H5.4 Incubator,
    58 - H5.5 Glass-encapsulated weights,
    59 - H6 TEST SAMPLES
    59 - H6.1 General requirements
    59 - H6.2 Number of tests
    59 - H7 TEST PROCEDURE
    59 - H7.1 Extraction
    60 - H7.2 Determination of extracted metals
    61 - H8 EXPRESSION OF RESULTS
    61 - H9 TEST REPORT
    63 - APPENDIX I - TEST METHOD-EXTRACTION PROCEDURES FOR END-OF-LINE FITTINGS
    63 - I1 SCOPE
    63 - I2 PRINCIPLE
    63 - I3 APPARATUS
    63 - I3.1 Test rig (for test procedure I6.3)
    64 - I3.2 Measuring vessels,
    64 - I4 REAGENTS (for test procedure I6.3)
    64 - I4.1 Test water
    64 - I4.2 Methanol
    64 - I5 TEST FITTINGS (for test procedure I6.3)
    64 - I6 TEST PROCEDURE
    64 - I6.1 Test procedure for extracts for Appendices C and D
    65 - I6.2 Test procedure for extracts for Appendix F and G
    66 - I6.3 Test procedure for extracts for Appendix H
    67 - I7 EXPRESSION OF RESULTS
    67 - I8 TEST REPORT
    68 - APPENDIX J - HIGH TEMPERATURE TESTS
    68 - J1 SCOPE
    68 - J2 PRINCIPLE
    68 - J3 APPARATUS
    68 - J3.1 Water bath or incubator,
    68 - J4 SAMPLES
    68 - J5 TEST PROCEDURE
    68 - J5.1 Extraction temperature
    69 - J5.2 Extraction procedure
    69 - J5.3 Testing
    69 - J6 EXPRESSION OF RESULTS
    69 - J7 TEST REPORT
    70 - APPENDIX K - TEST METHOD-SAMPLE EXTRACTION PROCEDURE FOR USE WITH WATER-HEATING SYSTEMS
    70 - K1 SCOPE
    70 - K2 PRINCIPLE
    70 - K3 REAGENTS
    70 - K3.1 Test water
    70 - K4 TEST PROCEDURE
    70 - K4.1 Installation
    71 - K4.2 Test method
    74 - K5 EXPRESSION OF RESULTS
    74 - K6 TEST REPORT
    75 - APPENDIX L - SUGGESTED PRODUCT SUBMISSION FORM
    78 - APPENDIX M - SIMULATED SAMPLES
    78 - M1 SCOPE
    78 - M2 GENERAL
    78 - M3 TYPICAL EXAMPLES OF SIMULATED SAMPLES
    78 - M4 SPECIAL ISSUES
    79 - M5 COMPONENT DOCUMENTATION
    79 - M6 ACCEPTANCE

    Abstract - (Show below) - (Hide below)

    Sets out requirements for the suitability of products for use in contact with drinking water. Appendices provide test methods for evaluating those parameters that have the potential to affect the quality of water.

    Scope - (Show below) - (Hide below)

    This Standard specifies requirements for the suitability of products for use in contact with drinking water, with regard to their effect on the quality of water. These products include all items such as pipes, fittings, components, and materials used in coating, protection, lining, jointing, sealing and lubrication applications in the water supply and plumbing industry. The Standard requires that products intended for use in contact with drinking water be tested by exposure to extractant waters. Where appropriate, a scaling factor is applied to such tests to compensate for differences between laboratory and field conditions. This Standard does not take into account possible changes in materials, methods of manufacture or installation, nor is any consideration given to the frequency of testing of products. These should be covered by relevant product Standards. As a guide, products that have already been tested and comply with this Standard in the short term do not need to be retested. However, re-verification testing of products to this Standard is generally desirable after a period of five years. This is consistent with the requirements of overseas bodies such as the Drinking Water Inspectorate in the United Kingdom. Chemicals and media used directly for treating raw water to provide a suitable drinking water supply (e.g. lime, coagulants, activated carbon, ion-exchange resins) are not covered by this Standard.

    General Product Information - (Show below) - (Hide below)

    Committee CH-034
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    First published as AS 3855(Int)-1991.
    Redesignated AS 4020(Int)-1992.
    Second edition 1994.
    Jointly revised and designated AS/NZS 4020:1999.
    Fourth edition 2002. First published as AS 3855(Int)-1991. Redesignated AS 4020(Int)-1992. Second edition 1994. Jointly revised and designated AS/NZS 4020:1999. Fourth edition 2002.

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    AS/NZS 2243.3:2002 Safety in laboratories - Microbiological aspects and containment facilities
    AS/NZS 1477:1999 PVC pipes and fittings for pressure applications
    AS 2567-2002 Laminar flow cytotoxic drug safety cabinets
    AS/NZS 3500.4.2:1997 National Plumbing and Drainage Hot water supply systems - Acceptable solutions
    AS 4276.2-1995 Water microbiology Culture media, diluents and reagents (Reconfirmed 2013)
    AS 1012.8-1986 Methods of testing concrete - Method for making and curing concrete compression, indirect tensile and flexure test specimens, in the laboratory or in the field
    AS/NZS 3350.2.21:1999 Safety of household and similar electrical appliances Particular requirements - Storage water heaters

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