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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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Subscription pricing is determined by: Report also the temperature at which the measurement was made. 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.

Please fill in the form below to get a quote for the Cenco Dunuoy Surface-Tension Dd1331.

This value is used in the calculation of the conversion factor, F, mentioned in 5. Make the measurement by turning the torsion wire counter-clockwise and v1331 keeping the ring system in the zero position, as in the measurement of surface tension, until the ring breaks through the interface.

Next, place an accurately standardized weight of between and mg on the paper platform and turn the dial-adjusting screw until the index level of the arm is opposite the reference line of the mirror. Carefully pour the oil on top of the aqueous solution to form the two-layer system. Material Safety Data Sheets are available for reagents and materials. Since the submerging of the ring 6.

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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. Check the plane of the ring, and set the dial and vernier at zero. aastm

What is your application? No other units of measurement are included in this standard. Surface and interfacial tension Technology. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Pharmaceutical laboratory apparatus stability chambers, tablet disintegration, tablet dissolution, tablet hardness, V-blenders, Care should be taken that the solution is physically homogeneous. As the voice of the U.

ASTM D1331 – 14

For liquids of low surface tension, such as surfaceactive agents, F is, in general, appreciably less than unity. Ring method allows readings to be made in seconds. Email Us or call toll-free: There were no books atsm for the applied search filters. ASTM D standard test method for interfacial tension of As the breaking point is approached, the adjustments must be made more carefully and more slowly. Two methods are covered as follows: The factor D can be measured by the usual procedures, and the value d can be obtained from published data.


Link to Active This link will always route to the current Active version of d331 standard.

It can be numerically specied in terms of R, the mean radius, in centimetres, of the ring; r, the radius, in centimetres, of the wire from which the ring is made; and V, the maximum volume of liquid elevated above the free surface of the liquid.

Two methods are covered as follows:. D 11ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.

Current edition approved June 1, Cenco Dunuoy Surface-Tension Tensiometer. If the document is revised or amended, you will be notified by email. This standard is not included d13311 any packages. D 11automatically compensates for the weight of the paper platform. Search book title Enter keywords for book title search. Remember me for one month. F is a function of the contours of the liquid surface in d133 neighborhood of the ring at the instant of breakaway.

Record the dial reading when the ring detaches from the surface.