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 MoreTopics: Liquid Properties, density, oscillating u-tube, liquid density
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?
Read MoreTopics: Automatic Surface Tension Measurment, Measure Viscosity, Consistency, contact angle, Liquid Properties, density
The answer to the question, “How Long Does a Water Activity Test Take?” is, as with most testing questions, “it depends.” Some water activity meters promise a test completed in a very short time; some in as little as five minutes. This time is an arbitrary selection that may or may not produce a satisfactory result.
Read MoreTopics: Bound Moisture, Free Moisture, Moisture Analysis, Water Activity, Moisture, water activity measurement
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.
Read MoreTopics: Viscometers, Viscosity, Dynamic Viscosity, rotational viscometer, Liquid Properties
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.
Read MoreTopics: Measure Viscosity, Viscometers, Viscosity, Dynamic Viscosity, rotational viscometer, Liquid Properties
Loss on Drying (LOD) Moisture Balance analysis is based on drying a sample and comparing the difference in weight before and after drying.
Topics: Moisture Testing, Loss-On-Drying, moisture balance