Do an internet search for the term “viscosity”, and you’ll find a variety of definitions for the word. For example:
When people hear of viscosity for the first time, invariably they ask these three questions:Read More
When our customers tell me about the different places where CENCO and CSC Digital Moisture balances are used it always interests me.
As usual when we pose a question, like:
Should you use Coulometric or Volumetric Karl Fischer to measure moisture in your product?
We often get a the reaction, “So Who Cares?” We'll try to answer both questions.
Water activity is the water in a material available to support the growth of microorganisms. Consequently, the measurement of water activity is important in areas such as food processing, pharmaceutical production, products affected by mold, and a host of products that change characteristics when exposed to moisture.Read More
When people are looking for a way to measure small amounts of moisture, we often recommend the Karl Fischer method.
What is Karl Fischer?Read More
The most popular was to measure include:
- Drying the material and measure the weight loss
- Using a calibration and electronic instrument
- Using a titration method such as Karl Fischer
When using these processes, we take for granted that the results will be the product's actual moisture.
I was musing, the other day on the designs of two ring tensiometers. One of them is called an interfacial tensiometer and the other simply a tensiometer. The plain tensiometer works only with an upward pull and the interfacial works with both an upward pull as well as a downward push. Before I get to my question a couple of definition might be useful.
Shear Stress - Shear Rate
Viscosity! If you ever think about it, what do you see?Read More
The definition of Liquid Surface Tension is simple.
It's the force that keeps a liquid from flying off into space.
However, the measurement of surface tension can take many forms, which can be confusing. In an attempt to get some clarity, we have articulated two principle measurement concepts in this article: drop-based measurement and force-based measurement.
Topics: Automatic Digital Tensiometer, Automatic Surface Tension Measurment, Surface Tension Measurement, Surface Tension, Interfacial Tensiometer, interfacial tension, tensiometers, du Nouy tensiometer, surface tension instruments, surface tension analysis