Find the most up-to-date version of ASTM D at Engineering ASTM D; ASTM D; ASTM D; ASTM C () .. ASTM D; ASTM D; ISO ; OECD ; EN ; EN. ASTM D – Standard Test Methods for Surface and Interfacial Tension of Solutions of Surface-Active Agents. This standard is a part of ASTM Book of.
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Contact between the oil and the ring should be avoided during this operation. This standard is not included in any packages.
Also report the temperature at which the determination was made. If gamma-c is less than the calculated value, the torsion arm should be lengthened. More than one solute component may be present, including solute components that are not in themselves surface-active. These simultaneous adjustments must be carefully proportioned so that the ring system remains constantly in its zero position.
Compact unit comes with a carrying case for easy transport. As the breaking point is approached, r1331 adjustments must be made more carefully and more slowly. NOTE 5Since the surface tension of a solution is a function of the concentration, care must be taken that the concentration is adjusted and recorded within known limits.
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. When set in the instrument, the plane of the ring shall be horizontal, that is, parallel to the surface plane of the liquid being tested.
Since the submerging of the ring 6. Method D—Interfacial Tension by Wilhelmy plate. Repeat the calibration procedure, readjusting the zero position after each change in the length of the torsion arm, until the dial reading agrees with the calculated value.
Cenco Dunuoy Surface-Tension Tensiometer. If it is desired to report the surface tension value of an aqueous solution at some standard temperature, for example, 25C, and the measurement was actually made at a temperature within about 3C of this value that is, 22 to 28Ca correction factor of 0.
ASTM D Standard Test Methods for Surface and Interfacial Tension
Report and adequately specify the nature of the nonaqueous liquid oil used in the determination. After allowing sufficient time for the interfacial tension to come to its equilibrium value Note 6make the measurement in the same manner as that used for measuring surface tension.
This value for the correction factor is not valid for nonaqueous liquids, and should be used only where the solvent is preponderantly water. Register for a trial account. Pull the torsion wire taut by means of the tension screw, and adjust the dial reading and the vernier to zero.
The corrected surface tension in dynes per centimetre is obtained by multiplying the uncorrected surface tension value by F. Lab Equipment for Sale: Enter product namemake or model. Published on Apr View Download It must, therefore, be ascertained and applied.
Already Subscribed to this asym. As the voice of the U. Calibration of Apparatus 5. The factor D can be measured by d131 usual procedures, and the value d can be obtained from published data. Originally approved in No further reproductions authorized.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. What are your requirements. No other units of measurement are included in this standard. F Standard Specification for Driven Fasteners: Review them for hazards prior to usage.
Calibration consists essentially in adjusting the length of the torsion arm so that the dial scale will read directly in dynes per centimetre.
ASTM D1331-11 Standard Test Methods for Surface and Interfacial Tension
The tensiometer shall be placed on a sturdy support that is free from vibrations and other distur1 These test methods are under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and are the direct responsibility of Subcommittee D Material Safety Data Sheets are available for reagents and materials.
Type r1331 as it v1331 This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn. This includes hardness components in the water.
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