• There are no items in your cart
We noticed you’re not on the correct regional site. Switch to our AMERICAS site for the best experience.
Dismiss alert

ASTM D 1067 : 2006


A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Methods for Acidity or Alkalinity of Water
Available format(s)

Hardcopy , PDF

Superseded date




Published date


1.1 These test methods cover the determination of acidity or alkalinity of all types of water. Three test methods are given as follows:

Test Method A (Electrometric Titration) 7 to 15
Test Method B (Electrometric or Color-Change Titration) 16 to 24
Test Method C (Color-Change Titration After Hydrogen Peroxide Oxidation and Boiling) 25 to 33

1.2 In all of these test methods the hydrogen or hydroxyl ions present in water by virtue of the dissociation or hydrolysis of its solutes, or both, are neutralized by titration with standard alkali (acidity) or acid (alkalinity). Of the three procedures, Test Method A is the most precise and accurate. It is used to develop an electrometric titration curve (sometimes referred to as a pH curve), which defines the acidity or alkalinity of the sample and indicates inflection points and buffering capacity, if any. In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest. The other two methods are used to determine acidity or alkalinity relative to a predesignated end point based on the change in color of an internal indicator or the equivalent end point measured by a pH meter. They are suitable for routine control purposes.

1.3 When titrating to a specific end point, the choice of end point will require a careful analysis of the titration curve, the effects of any anticipated changes in composition on the titration curve, knowledge of the intended uses or disposition of the water, and a knowledge of the characteristics of the process controls involved. While inflection points (rapid changes in pH) are usually preferred for accurate analysis of sample composition and obtaining the best precision, the use of an inflection point for process control may result in significant errors in chemical treatment or process control in some applications. When titrating to a selected end point dictated by practical considerations, (1) only a part of the actual neutralizing capacity of the water may be measured, or (2) this capacity may actually be exceeded in arriving at optimum acidity or alkalinity conditions.

1.4 A scope section is provided in each test method as a guide. It is the responsibility of the analyst to determine the acceptability of these test methods for each matrix.

1.5 Former Test Methods C (Color-Comparison Titration) and D (Color-Change Titration After Boiling) were discontinued. Refer to Appendix X4 for historical information.

1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.7 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 and health practices and determine the applicability of regulatory limitations prior to use.

D 19
Test Method
American Society for Testing and Materials

ASTM D 1293 : 2018 Standard Test Methods for pH of Water
ASTM E 2169 : 2017 Standard Practice for Selecting Antimicrobial Pesticides for Use in Water-Miscible Metalworking Fluids
ASTM D 6469 : 2017 Standard Guide for Microbial Contamination in Fuels and Fuel Systems
ASTM E 1391 : 2003 : R2014 Standard Guide for Collection, Storage, Characterization, and Manipulation of Sediments for Toxicological Testing and for Selection of Samplers Used to Collect Benthic Invertebrates
ASTM D 8006 : 2016 Standard Guide for Sampling and Analysis of Residential and Commercial Water Supply Wells in Areas of Exploration and Production (E&P) Operations
ASTM D 5952 : 2008 : R2015 Standard Guide for the Inspection of Water Systems for Legionella and the Investigation of Possible Outbreaks of Legionellosis (Legionnaires' Disease or Pontiac Fever) (Withdrawn 2024)
ASTM D 5744 : 2018 Standard Test Method for Laboratory Weathering of Solid Materials Using a Humidity Cell
ASTM C 500/C500M : 2007 : R2019 Standard Test Methods for Asbestos-Cement Pipe (Withdrawn 2022)
ASTM D 3087 : 2017 Standard Test Method for Operating Performance of Anion-Exchange Materials for Strong Acid Removal
ASTM D 5091 : 1995 : R2014 Standard Guide for Water Analysis for Electrodialysis/Electrodialysis Reversal Applications (Withdrawn 2023)
ASTM D 1782 : 2017 Standard Test Methods for Operating Performance of Particulate Cation-Exchange Materials
ASTM E 1915 : 2013 Standard Test Methods for Analysis of Metal Bearing Ores and Related Materials for Carbon, Sulfur, and Acid-Base Characteristics
ASTM E 2275 : 2014 Standard Practice for Evaluating Water-Miscible Metalworking Fluid Bioresistance and Antimicrobial Pesticide Performance
ASTM D 4993 : 2008 : R2014 Standard Practice for Calculation and Adjustment of Silica (SiO<inf>2</inf>) Scaling for Reverse Osmosis (Withdrawn 2023)
ASTM D 3739 : 2019 Standard Practice for Calculation and Adjustment of the Langelier Saturation Index for Reverse Osmosis
ASTM D 2946 : 2001 : R2018 Standard Terminology for Asbestos and Asbestos–Cement Products (Withdrawn 2022)
ASTM D 7294 : 2013 Standard Guide for Collecting Treatment Process Design Data at a Contaminated Site—A Site Contaminated With Chemicals of Interest

View more information
Excluding VAT

Access your standards online with a subscription


  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.