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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A discussion of terms is presented in Appendix X1.
If the pH is above 4. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement d107 such rights, are entirely their own responsibility. In addition, the acidity or alkalinity can be determined with respect to any pH of particular interest.
Add the standard solution in small increments, swirling the?
When an indicator is used, those listed in Prepare and standardize in like manner. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.
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, s1067 2 this capacity may actually be exceeded in arriving at optimum acidity or astk conditions.
If large numbers of samples are analyzed in the bath, analyze the LCS after every 10 samples. Of the three procedures, Test Method A is the most precise and accurate.
Type III water was speci? The time required will vary with different waters d167 the reaction rate constants of different chemical equilibria vary. Summary of Test Method 8.
ASTM D1067 – 16
In water analysis, a pH of about 4. All pH measurements are made electrometrically. Titration is carried out by means of an internal indicator d1607 the color-change procedure described in Test Method B Electrometric or Color-Change Titration.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. 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.
After each addition, mix the solution thoroughly. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Dilute to 1 L with water. NOTE 3—An electrometric titration curve is smooth, with the pH changing progressively in a single direction, if equilibrium is achieved after each incremental addition of titrant, and may contain one or more in? Suspended solids may interfere in electrometric titrations by making the glass electrode sluggish. Active view current version of standard.
ASTM D – 16 – Standard Test Methods for Acidity or Alkalinity of Water
A superscript epsilon e indicates an editorial change since the last revision or reapproval. Then, the analyst may be able to develop an interpretation of his data better suited to his particular needs. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
In this test method, hydrogen peroxide is added prior to boiling to accelerate the chemical reactions needed for equilibrium. Ragged or irregular curves may indicate that equilibrium was not attained before adding succeeding increments.
The acidity or alkalinity relative to a particular pH may be determined from the curve. They are suitable for routine control purposes.
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.
ASTM D – 16 Standard Test Methods for Acidity or Alkalinity of Water
Precision and Bias 7 From that point on, make dropwise additions. It is used to develop an electrometric titration curve sometimes referred to as a pH curvewhich de? Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
The acidity or alkalinity of the water or that relative to a particular pH is determined from the curve.
This standard has been approved for use by agencies of the Department of Defense. It is particularly applicable to mine drainage, industrial waste waters carrying waste acids, and similar waters. Unless otherwise indicated, it is intended that all reagents shall conform to the speci?
Mechanical stirring, preferably of the magnetic type, is required for this operation; mixing by means of a gas stream is not permitted.