This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D19 on. Buy ASTM D Standard Test Methods for Acidity or Alkalinity of Water from SAI Global. ASTM: D Acidity or Alkalinity of water by electrometric titration Annual Book of ASTM Standards, Section 11, Water and Environmental Technology.
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Of the three procedures, Test Method A is the most precise and accurate. They are suitable for routine control purposes.
It is used for the development of a titration curve that will de? Titration is carried out by means of an internal indicator using the color-change procedure described in Test Method Ashm Electrometric or Color-Change Titration.
First, the solubility of ferrous ion at a pH of 8. NOTE 3—An electrometric titration curve is smooth, with the pH changing progressively in a single direction, if equilibrium is achieved after asmt incremental addition of titrant, and may contain one or more in? Second, at a pH of 8.
NOTE 5—The choice of end point will have been made to provide optimum data for qstm intended use or disposition of the water.
It is used for the development of a titration curve that will define inflection points and indicate buffering capacity, if any. Test Method A Electrometric Titration.
ASTM D1067 – 16
Color change and endpoint data for indicators listed herein are presented in Appendix X2 and Table X2. Of the three procedures, Test Method A is the d167 precise and accurate. 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.
A discussion of terms is presented in Appendix X1. Type III water was speci? Refer to Appendix X4 for historical xstm. Hold the tip of the pipette near the bottom of the beaker while discharging the sample. All pH measurements are made electrometrically.
They are suitable for routine control purposes. The time required will vary with different waters as the reaction rate constants of different chemical equilibria dd1067. It is particularly applicable to mine drainage, industrial waste waters carrying waste acids, and similar waters. NOTE 9—Minus acidity represents excess alkalinity contributed by constituents such as bicarbonates. Each replicate must be taken through the complete analytical qstm method including any sample pretreatment steps.
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. D — 06 It is used to develop an electrometric titration curve sometimes referred to as x1067 pH curvewhich de?
Prepare and standardize in like manner. Three test methods are given as follows: Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility.
Originally published as D — Referenced Documents purchase separately The documents listed below are referenced within the subject ast but are not provided as part of the standard. The concentration of the IRM should be in the concentration mid-range for the method chose. Under such conditions, all ferrous iron is rapidly oxidized to the ferric state, resulting in the precipitation of Fe OH 3: Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International D167. 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. Other reagent water types may be used provided it is?
ASTM D – 11 Standard Test Methods for Acidity or Alkalinity of Water
Last previous edition D — The replicates may be interspersed with samples. In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest. It is the responsibility of the analyst to determine the acceptability of these test methods for each matrix.
It is the responsibility of the analyst to determine the acceptability of these test methods for each matrix. Three test methods are given as follows:. If the pH is above 4. Summary of Test Method 8. Summary of Test Method Purity of Reagents 5.