I recently had a customer who asked how VROC® technology measures viscosity compared to a rheometer that measures shear stress and also control shear rate. From the controls, the rheometer will then calculate viscosity. Similar to the rheometer, VROC® powered viscometers will measure the pressure drop to measure shear stress and use flow rates to control the flow. Essentially the ideas are parallel in the fact that VROC® measures the pressure drop and rheometers will measure torque so you will not need to readjust your expectations when working with VROC® technology.
One of the common questions we get from our customers is, “Which chip do I use to test my fluid?” RheoSense has a variety of different chips and you may wonder which chip would be the best for your application. The m-VROC® has four different designations of chips: A, B, C, and E. These letter values reference the max pressure capability of the MEMS pressure sensors inside the microfluidic flow cell. With the A-series being able to measure the lowest pressures for low viscosity fluids, the E-series are able to measure the highest pressures for higher viscosities and higher shear rates.
My name is Ecko Chen, and I am the Mechanical Engineer here at RheoSense. My coworker Brandon has introduced a consumable list for the VROC® Initium maintenance in the previous post. I am going to expand a little on one of the most common consumable replacements --- The septa.
Starting this month, we're excited to announce the production of a new series of videos on our fully automatic, high throughput viscometer: VROC® Initium. In the first half of the series, our specialists and Initium production engineers explain step-by-step on how to correctly and safely set up and configure your instrument. Each instructional video will range anywhere from 3 minutes to 10 minutes. Each video includes tips or other helpful information to ensure optimal functionality and capabilities of your VROC® Initium. We are more than happy to answer any questions you may have, as well as creating additional media content topics suggested from you, our clients.
My name is Brandon Bell and I am the Process Engineer here at RheoSense. I am responsible for the production of the VROC® Initium product line and I wanted to take a few minutes to provide you a few tips and tricks that I have picked up to help you get the most out of your instrument.
We frequently get the question, "how do I know that my equipment is working, or that these tests are accurate?" The best way to determine this and be sure of your results is to run a system suitability test.