Table of Contents

1 -  AS 3550.3-1992 WATERS - DETERMINATION OF ALKALINITY-ACIDIMETRIC TITRATION METHOD
4 -  PREFACE
4 -  CONTENTS
4 -  FOREWORD
5 -  1 SCOPE
5 -  2 REFERENCED DOCUMENTS
5 -  3 PRINCIPLE
5 -  4 REACTIONS
5 -  5 REAGENTS AND MATERIALS
5 -  5.1 General requirements
5 -  5.2 Solutions
5 -  5.2.1 Nitric acid
5 -  5.2.2 Sodium thiosulfate
5 -  5.2.3 Standard sodium carbonate solution
5 -  5.2.4 Standard hydrochloric acid
6 -  5.2.5 Standard hydrochloric acid
6 -  5.2.6 Phenolphthalein
6 -  5.2.7 Mixed indicator
6 -  6 APPARATUS
6 -  6.1 Glassware
6 -  6.2 Electrometric titrator
6 -  7 SAMPLING AND SAMPLES
6 -  7.1 General
6 -  7.2 Container
6 -  7.3 Sample storage
6 -  8 PROCEDURE
6 -  8.1 Potentiometric titration to preselected pH
6 -  8.1.1 Using potentiometric titration
6 -  8.1.2 Potentiometric titration of low alkalinity
6 -  8.2 Titration using indicators
7 -  9 CALCULATION AND EXPRESSION OF RESULTS
7 -  9.1 Calculation
7 -  9.2 Alkalinity relationships
8 -  9.3 Expression in other units
8 -  10 PRECISION
8 -  11 TEST REPORT

Abstract

Sets out a method for use where the alkalinity is in the range 1 mg/L at 2500 mg/L (expressed as CaCo(sub)3(/sub)) under the conditions of test.

Scope

This Standard sets out a titrimetric method for the determination of alkalinity in waters. This method is applicable to waters where the alkalinity is in the range 1 mg/L to 2500 mg/L (expressed as CaCO3) under the conditions of test.
NOTE: The method is subject to interference from soaps, oily matter, suspended solids or precipitates which may coat the glass electrode of the pH meter and cause a sluggish response. These interfering substances may also cause difficulty in detecting the indicator end-point.

General Product Information

Published
Document Type	Standard
Status	Current
Publisher	Standards Australia
Pages
ISBN
Committee	EV-008
Supersedes	AS 2449-1981