Table of Contents

1 -  AS/NZS 1580.505.1:1996 PAINTS AND RELATED MATERIALS-METHODS OF TEST - pH OF WATER-BASED PAINTS
1 -  PREFACE
1 -  METHOD
1 -  1 SCOPE
1 -  2 REFERENCED DOCUMENTS
2 -  3 METHOD A-REFEREE METHOD
2 -  3.1 Principle
2 -  3.2 Apparatus
2 -  3.2.1 pH measuring instrument
2 -  3.2.2 Thermometer
2 -  3.3 Materials
2 -  3.3.1 Reference solutions
2 -  3.3.2 Saturated potassium chloride (KCI) solution
2 -  3.3.3 Distilled or deionized water
2 -  3.4 Preparation of sample
2 -  3.5 Test conditions
2 -  3.6 Procedure
2 -  3.6.1 Calibration of instrument
3 -  3.6.2 pH determination of test sample
3 -  3.6.3 Correction for instrument error
4 -  3.7 Reproducibility and repeatability
5 -  3.8 Report
5 -  4 METHOD B-APPROXIMATE METHOD
5 -  4.1 Principle
5 -  4.2 Apparatus and material
5 -  4.2.1 pH meter
5 -  4.2.2 Distilled or ionized water
5 -  4.2.3 Absorbent tissues
5 -  4.3 Procedure
5 -  4.4 Report
7 -  APPENDIX A - NOTES ON REFERENCE SOLUTIONS FOR CALIBRATING pH METERS
8 -  APPENDIX B - PERFORMANCE TESTS FOR pH METERS AND GLASS ELECTRODES
8 -  B1 INTRODUCTION
8 -  B2 pH METER TEST
8 -  B2.1 Apparatus
8 -  B2.2 Procedure
8 -  B2.3 Evaluation of results
9 -  B3 GLASS ELECTRODES TEST
9 -  B3.1 Outline of test
9 -  B3.2 Apparatus
9 -  B3.3 Procedure
9 -  B3.4 Evaluation of results

Abstract

Specifies a referee method and a production for determining the pH of water-based paints.

RECONFIRMATION NOTICE
Technical Committee CH-003 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change.
Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice.
Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 30 May 2013.
Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 26 August 2013.
The following are represented on Technical Committee CH-003:

Australasian Corrosion Association
Australian Paint Approval Scheme
Australian Paint Manufactures' Federation
Australian Pipeline Industry Association
Institution of Professional Engineers New Zealand
Master Painters New Zealand Association
Water Corporati

Scope

This Standard sets out two methods for determining the pH of water-based paints. Method A is a referee method and is considered to be primarily applicable to paints whose pH is within the nominal range of pH = 3 to pH = 10.
NOTE: Method A may be used for paints whose pH occurs outside this range but the test laboratory should be aware of the limitations of the accuracy of glass electrodes used at these extremes of pH. Hence the precision data stated in Clause 9 is not applicable to those cases.

Method B is intended for production control to determine the approximate pH only.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
ProductNote	Reconfirmation Notice 16-09-2013
Pages
ISBN
Committee	CH-003
Supersedes	AS 1580.505.1-1987 DR 95091