--- title: Automatic Tensiometer, duNouy Ring and Wilhelmy Plate Methods of Surface Tension Testing description: Automatic measurement with duNouy Ring or Wilhelmy Plate Surface Tension Test methods. How The duNouy Ring works. How the Wilhelmy Plate works. image: https://www.cscscientific.com/hs-fs/hub/75757/file-15562935.jpg --- [![CSC Scientific Company, Inc.](https://www.cscscientific.com/hs-fs/file-1239671252-jpg/images/csc-logo-1.jpg "CSC Scientific Company, Inc.")](https://www.cscscientific.com/?hsLang=en-us) # Automatic Surface Tension Measurement with DuNouy Ring Or Wilhelmy Plate The DST 60 Tensiometer that does Surface Tension Tests Automatically # Automatic Surface Tension Analysis ## **Surface Tension - What is It?** Surface tension of a liquid is the force that holds the molecules on the surface together and keeps the liquid from flying away. Surface tension measuring instruments measure this force. Two of the more widely used methods are known as duNouy ring and Wilhelmy plate. ## **Why and Where is Surface Tension Important?** Surface tension measurements are important in a number of industries. For example, they are vital to the development and production of coatings such as ink and paint, liquid cosmetics, pesticides, lubricants and pharmaceuticals. ## **duNouy Ring & Wilhelmy Plate Methods Available** The DST 60 Automatic Tensiometer runs liquid surface tension measurement tests with either duNouy rings or Wilhelmy plates. The test results are displayed on the instrument and can also be sent to a printer or computer. After loading the sample, the test process is automatic. (Interfacial Tension tests may be conducted manually.) ## **Automatic Test Process** This Automatic Tensiometer eliminates inconsistencies resulting from different people doing the surface tension analysis. The operation is as simple as loading the test sample just above the ring or plate and pressing the start button. During the process of the test, the force is continually shown on the digital display.  **Temperature Control Option** Surface tension readings are sensitive to temperature. When it is important to control this part of the test environment, an optional dual test chamber is available for use with a water bath. This provides close control of the test material temperature. ## **Computer Analysis of Test Results** The USB port installed on the DST 60 provides an input to a computer for data analysis. Real-time results from the test can be recorded and displayed on charts or table.   ## **Measurement Specs** The DTS 60 Tensiometer has a range of 1 to 1,000 dynes/cm (nM/m). ### Auto Tensionmeter WEB Page [![Review This Instrument](https://no-cache.hubspot.com/cta/default/75757/78249f0e-d17c-4f5e-a433-f7871152b300.png)](https://cta-redirect.hubspot.com/cta/redirect/75757/78249f0e-d17c-4f5e-a433-f7871152b300) ### DTS 60 Automatic Surface Tension ![IMG_1755](https://www.cscscientific.com/hs-fs/hubfs/IMG_1755.jpg?width=2504&name=IMG_1755.jpg)   [![Get Pricing Information](https://no-cache.hubspot.com/cta/default/75757/7358fece-12ca-4c63-b8ab-a04088f3406b.png)](https://cta-redirect.hubspot.com/cta/redirect/75757/7358fece-12ca-4c63-b8ab-a04088f3406b)   ![DuNouy Ring Steps](https://www.cscscientific.com/hs-fs/hubfs/DuNouy%20Ring%20Steps.jpg?width=881&name=DuNouy%20Ring%20Steps.jpg "DuNouy Ring Steps") ## The Dunouy Ring Method ![Whilhelmy Plate Process_](https://www.cscscientific.com/hs-fs/hub/75757/file-15562935.jpg?width=294&name=file-15562935.jpg "Whilhelmy Plate Process_") ## The Wilhelmy Plate Method ## Check the Scope of  CSC Tensiometers - [Classic Manual Instruments ](https://www.cscscientific.com/surface-tension/tensiometer?hsLang=en-us)                                      - [Automatic Tensiometer  ](https://www.cscscientific.com/surface-tension/automatic-tensiometer?hsLang=en-us)                                           - [Analytical Tensiometer](https://www.cscscientific.com/dst-100-analytical-tensiometer?hsLang=en-us) [![Share on Facebook](https://static.hubspot.com/final/img/common/icons/social/facebook-24x24.png)](http://www.facebook.com/share.php?u=https%3A%2F%2Fwww.cscscientific.com%2Fsurface-tension%2Fautomatic-tensiometer%3Futm_medium%3Dsocial%26utm_source%3Dfacebook) [![Share on LinkedIn](https://static.hubspot.com/final/img/common/icons/social/linkedin-24x24.png)](http://www.linkedin.com/shareArticle?mini=true&url=https%3A%2F%2Fwww.cscscientific.com%2Fsurface-tension%2Fautomatic-tensiometer%3Futm_medium%3Dsocial%26utm_source%3Dlinkedin) [![Share on Twitter](https://static.hubspot.com/final/img/common/icons/social/twitter-24x24.png)](https://twitter.com/intent/tweet?original_referer=https%3A%2F%2Fwww.cscscientific.com%2Fsurface-tension%2Fautomatic-tensiometer%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&url=https%3A%2F%2Fwww.cscscientific.com%2Fsurface-tension%2Fautomatic-tensiometer%3Futm_medium%3Dsocial%26utm_source%3Dtwitter&source=tweetbutton&text=Automatic%20Tensiometer%2C%20%20duNouy%20Ring%20%20and%20Wilhelmy%20Plate%20Methods%20of%20Surface%20Tension%20Testing) [![Share on Pinterest](https://static.hubspot.com/final/img/common/icons/social/pinterest-24x24.png)](http://pinterest.com/pin/create/button/?url=https%3A%2F%2Fwww.cscscientific.com%2Fsurface-tension%2Fautomatic-tensiometer%3Futm_medium%3Dsocial%26utm_source%3Dpinterest&media=https%3A%2F%2Fcdn2.hubspot.net%2Fhubfs%2F75757%2Fimages%2FDST-60.jpg) CSC Scientific Company, Inc 2799-C Merrilee Drive Fairfax VA, 22031 800-621-4778 703-280-5142 (fax) csc@cscscientific.com [![credit cards](https://cdn2.hubspot.net/hub/75757/images//creditcard.gif)](http://www.cscscientific.us) No part of this page or any other page in this site may be copied or reproduced in any way. 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