CSC Scientific Blog

A blog about test equipment

CSC Scientific Blog

Art Gatenby

Manufacturer of test equipment. The Company specialized in the measurement of Moisture, Particle Size and Surface Tension. In these areas CSC Scientific serves the Food, Chemical, Pharmaceutical, Petroleum, Waste Water, Mining, Power and similar industries.
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Recent Posts

How Density Testing Got Easy

Posted by Art Gatenby on Sep 25, 2018 3:20:03 PM

The first recorded application of density measurement was for fraud detection. The density measurement concept then expanded to encompass determination of material composition and assessment of product quality.

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Topics: oscillating u-tube, liquid density, density, hydrometer

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

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

Density - Who Cares? Maybe You Should.

Posted by Art Gatenby on Dec 7, 2017 12:31:49 PM

We’ve all heard of Density since general science class in middle school. "The weight of a 12 ounce Coke." That’s pretty simple.

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Topics: liquid density, density, oscillating u-tube, Liquid Properties

What are Liquid Properties? Why Should Anyone Care?

Posted by Art Gatenby on Aug 10, 2017 2:59:24 PM

The first question is, "What are Liquid Properties?" Are they some kind of underwater real estate?

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Topics: Consistency, contact angle, Automatic Surface Tension Measurment, Measure Viscosity, density, Liquid Properties

What Does A Moisture Balance Cost?

Posted by Art Gatenby on Mar 13, 2017 3:28:57 PM

Loss on Drying (LOD) Moisture Balance analysis is based on drying a sample and comparing the difference in weight before and after drying. 

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Topics: Moisture Testing, moisture balance, Loss-On-Drying

Do You Need An Automatic Tensiometer?

Posted by Art Gatenby on Dec 6, 2016 5:16:09 PM

This is an update of an article originally published in December 2013 - Three years ago.

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Topics: Surface Tension Measurement, Automatic Surface Tension Measurment, Automatic Digital Tensiometer, Liquid Properties

A Sieve Shaker's Passing From Noise To Quiet

Posted by Art Gatenby on Oct 26, 2016 2:26:45 PM

Quiet Sieve Shakers

Recently in a quiet, reflective moment, I recalled my first work with sieve shakers. Horizontal motion with tapping was the basic shaker design. The Ro-Tap® was King, and there were few alternatives. Different shakers for special applications, such as the Mary Jane and one that was hung from the ceiling, were the exception. 

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Topics: Sieve Shakers, Quiet sieve shakers, Endecotts, RoTap, Noisy Sieving, sieving, Particle Size Analysis, Sonic Sifter, vacuum sievers

A Spotlight on Rotational Viscometers

Posted by Art Gatenby on Oct 3, 2016 10:45:00 AM

You probably know that rotational viscometers work by measuring the torque on a vertical shaft that rotates a spindle.  The spindle is in the test sample and its rotation is impeded in proportion to the viscosity of the sample. These instruments measure viscosity.

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Topics: Viscosity, Viscometers, Liquid Properties

Should You Move to "Actual" Surface Tension?

Posted by Art Gatenby on Sep 8, 2016 4:31:38 PM

An understandable definition of surface tension: The attraction force between molecules at the surface of a liquid. The force that keeps if from flying off into space.

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Topics: Surface Tension, Surface Tension Measurement, Tensiometer, actual surface tension, apparent surface tension, Liquid Properties

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