At first glance, viscosity seems pretty straightforward: it tells you how thick a liquid is, or how easily it flows. Case closed, right?
Read MoreHank Levi
Recent Posts
Dynamic vs. Kinematic Viscosity : What's The Difference?
Posted by Hank Levi on Aug 10, 2026, 6:52:09 PM
Topics: Newtonian Fluid, Viscometers, Viscosity, Consistency, Kinematic Viscosity, Dynamic Viscosity, rotational viscometer, Liquid Properties, density, Texture Analysis, gel time
Bubbles, Drops, Rings and Plates Measure What - Surface Tension
Posted by Hank Levi on Jun 11, 2026, 5:00:46 PM
Liquid surface tension has a straightforward definition with a dramatic job description: it’s the force that politely stops a liquid from flinging itself off into the universe.
Measuring it, however, is far less straightforward. There are multiple ways to quantify surface tension, and they can quickly turn an easy concept into a small maze of methods. To bring some order to the chaos, this article focuses on two main measurement approaches: drop-based techniques and force-based techniques.
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
How Loss on Drying Accuracy Is Affected by Volatile Compounds
Posted by Hank Levi on Jun 7, 2026, 2:53:40 PM
Topics: Free Moisture, Moisture Testing, CSC Digital Moisture Balance, Moisture
Topics: Micron-Sized Particles, Texture Analysis, bound water, Mixers, Planetary Centrifugal Mixer, Centrifugal Mixer, planetary mixer
Topics: Newtonian Fluid, Viscometers, Dynamic Viscosity, viscometer, rotational viscometer, Viscosity Stress, Viscosity Shear Rate, Non Newtonian
Coulometric/ Volumetric Karl Fischer Titration -- Which Should I Use?
Posted by Hank Levi on Feb 24, 2024, 2:17:08 PM
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.
Topics: Coulometric Karl Fischer, Volumetric Karl Fischer, Moisture Analysis, Moisture Testing, Karl Fischer, Karl Fischer Titration
Visitors to our web pages often arrive with the question, “What is the Function of a Sieve Shaker?”
Topics: Sieve Shakers, "Ask Art", Sonic Sifter, Agglomeration, Particle Size Analysis, Sieve Testing, Sieves, Sieving Process, Sieve Analysis, Quiet sieve shakers, sieve shaker
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 MoreTopics: Coulometric Karl Fischer, Karl Fischer, Karl Fischer Titration
What is the Difference Between Dynamic and Kinematic Viscosity?
Posted by Hank Levi on Jan 26, 2024, 1:55:33 PM
At first glance, viscosity seems like a fairly simple concept. It helps describe how thick a product is, or how well it flows. That's all, right?
In reality, there are several different terms that come under the heading of viscosity. These terms are derived from how the viscosity is measured. When people talk about viscosity, they are talking about one of two things: kinematic viscosity or dynamic viscosity.
It's not easy to find a lot of information on the differences between dynamic and kinematic viscosity. This is my attempt to bring clarity to these two principal concepts.
Read MoreTopics: Newtonian Fluid, Viscometers, Viscosity, Consistency, Kinematic Viscosity, Dynamic Viscosity, rotational viscometer, Liquid Properties, density, Texture Analysis, gel time

