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CSC Scientific Blog

Surface Tension by duNouy Rings or Wilhelmy Plates – Which to Choose?

Posted by Art Gatenby on Jul 16, 2018 5:34:18 PM

When tempted to think I know all there is about surface tension measurement, further information brings me back to earth. I’m conversant with the principal applications: surfactant analysis, plating, detecting contaminants, development of ink and the like. I have assisted customers to set up and calibrate duNouy Ring tensiometers for most applications -- all the while taking for granted that the Ring technique was the method of choice -- with only infrequent questions arising about Wilhelmy Plate tensiometers.

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Topics: Wilhelmy Plates, duNouy Rings, Tensiometer, Surface Tension, interfacial surface tension, Liquid Properties, surface tension instruments, surface tension analysis, Digital tensiometer, automatic Tensiometer

Do You Know If Your Test Sieves Are Doing the Job?

Posted by Art Gatenby on Jul 12, 2018 8:00:00 AM

Do You Re-Certify? Compare with a Master Stack? Check with Calibration Samples?

What Does Recertification Give?

The ASTM E-11 committee has done a great job of establishing three levels of testing. These levels show the probability of a sieve’s mesh to be within the permissible variations. These variations relate to the size of openings in wire-cloth used for test sieves.

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Topics: Sieve Shakers, Mid-Point Sieves, ASTM, Particle Size Analysis, Sieve Calibration, Sieve Certification, Sieve Testing, Sieving Process, Quiet sieve shakers, RoTap, sieving, test sieve equipment, sieve mesh

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