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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Check the plane of the ring, and set the dial and vernier at zero. Measures both upward and downward forces. Register for a trial account. What are your requirements. Calibration consists essentially in adjusting the length of the torsion arm so that the dial scale will read directly in dynes per centimetre. To calculate M, multiply the tensiometer dial reading by the factor which converts this reading into grams pull on the ring, as calculated in 5.

Add to Alert PDF. D 11Standard Test Methods forSurface and Interfacial Tension of Solutions of SurfaceActive Agents1This standard is issued under the xed designation D; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

Method C—Surface Tension by Wilhelmy plate. This instrument has, however, in addition to the torsion arm, a torsion-arm counterbalance.

Material Safety Data Sheets are available for reagents and v1331. If you like to setup a quick demo, let us know at support madcad. 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. Enter product namemake or model. What are your specifications?

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.


This standard is not included in any packages. Material Safety Data Sheets are available for reagents and materials. Compact unit comes with a carrying case for easy transport. Calibration of Apparatus 5.

With liquids lighter than water, it is accordingly possible to satm the precision3 Harkins, W.

Cenco Dunuoy 70545000 Surface-Tension Tensiometer

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. It is the recommended method for use with paints and resin solutions. Care should be taken that the solution is physically homogeneous. Adjust the length of this counterbalance to coincide with that of the torsion arm itself, in order that the vertical members of the assembly may remain in line.

In addition, surface tension data can predict interactions between liquids and solid surfaces or other liquids and can be used to establish wetting properties of paints, solvents, and other liquids. Published on Apr View Download Please fill in the form below to get a quote for the Cenco Dunuoy Surface-Tension Tensiometer:.

This value for the correction factor is not valid for nonaqueous liquids, and should be used only where the solvent is preponderantly water. Four methods are covered as follows:. Preparation of Apparatus 4.

ASTM D Standard Test Methods for Surface and Interfacial Tension

This standard is d1331 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. As the voice of the U.

Pull the torsion wire taut by means of the tension screw, and adjust the dial reading and the vernier to zero. Carefully pour the oil on top of the aqueous solution to form the two-layer system. What is your application? Note that a conversion factor, F see 5.


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. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.

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Method D—Interfacial Tension by Wilhelmy plate. More than one solute component may be present, including solute components that are not in themselves surface-active. Enter your account email address to request a password reset: Enter your personal account email address to request a password reset: Current edition approved June 1, Insert the platinum ring in the holder, and place a small piece of paper across the ring. Values of F in5. The precision tensiometer shall be calibrated in accordance with the following: Last previous edition approved in as D – 89 which was withdrawn January and reinstated in June Pharmaceutical laboratory apparatus stability chambers, tablet disintegration, tablet dissolution, tablet hardness, V-blenders, Make the measurement by turning the torsion wire counter-clockwise and simultaneously keeping the ring system in the zero position, as in the measurement of surface tension, until the ring breaks through the interface.

Originally approved in Record the dial reading to 0. Torsion may be applied to the wire by means of either the dial-adjusting screw which controls the dial reading or a rear adjusting screw. Lab Equipment for Sale: 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.