CSC Scientific Blog

A blog about test equipment

CSC Scientific Blog

How Much Do Rotational Viscometers Cost - And Why?

Posted by Amanda Ranowsky on Apr 19, 2017 8:15:00 AM

Looking at the rotational viscometers on the market today, you'd expect to see small price differences between the instruments offered by competing brands. But what if you find one viscometer priced at $2000 and another at $9000? Is the $9000 viscometer a better instrument? Why is there such a price difference between the two instruments? 

Viscometer prices depend on both the make-up of the instrument's motor, and on the technical features of the instrument (temperature probe, speed range, USB compatibility, etc.). There are two main types of rotational viscometers: those using a spring motor, and those using a servo motor. 

In this article, I’m going to take a look the options available for rotational viscometers, and how those options affect the price.

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Topics: Viscometers, Viscosity, Dynamic Viscosity, rotational viscometer

How to Get Consistent and Accurate Test Results with a Rotational Viscometer

Posted by Amanda Ranowsky on Mar 22, 2017 8:00:00 AM

Most rotational viscometer specifications promise high test accuracy and repeatability. However, an instrument on its own cannot guarantee accurate results. Instrument set-up and using the right test parameters are critical pieces of the puzzle. 

Test parameters and turbulence are two key factors to consider when preparing to test with a rotational viscometer. The spindle, speed setting, and temperature of the product are some of the parameters that can impact test results. Additionally, turbulence in the sample’s flow during a test will distort viscosity readings. Knowing how to manage these two factors can significantly contribute to the accuracy of your testing.

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Topics: Measure Viscosity, Viscometers, Viscosity, Dynamic Viscosity, rotational viscometer

What is the Difference Between Dynamic and Kinematic Viscosity?

Posted by Amanda Ranowsky on Jan 15, 2015 6:31:24 PM

I’m always trying to find a simple vision of the material testing world. When I was assigned to our new Viscosity product line, I thought I’d found it. Then I was introduced to the concepts of the dynamic and kinematic factors of viscosity.

This is my attempt to bring clarity to these two principal ways to measure viscosity. 

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Topics: Viscometers, Viscosity, Consistency, Kinematic Viscosity, Dynamic Viscosity

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