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.Read More
CSC Scientific Blog
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.
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 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.Read More
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
We’ve all heard of Density since general science class in middle school. "The weight of a 12 ounce Coke." That’s pretty simple.Read More
The first question is, "What are Liquid Properties?" Are they some kind of underwater real estate?Read More
Loss on Drying (LOD) Moisture Balance analysis is based on drying a sample and comparing the difference in weight before and after drying.
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.Read More
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.Read More
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”.Read More