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Press Release - Introducing VROC® initium one plus

SAN RAMON, CA – August 7, 2020 – RheoSense, Inc. is proud to introduce the new VROC® initium one plus, the leading automatic viscometer that measures viscosity with the highest accuracy (2% of reading) and repeatability (0.5% of reading). Equipped with automatic sample loading and sample cleaning, VROC® initium one plus measures absolute viscosity as a function of shear rate across a wide temperature range (4 - 70°C), allowing for unique viscosity fingerprinting of your samples at our highest throughput, measuring up to 4 samples per hour.

In Small Sample Viscometer, Announcement, Automatic Viscometer, High throughput Viscometer, VROC initium one plus, press release

More Than Viscosity - Molecular Structure Characterization

When comparing viscometers, the primary differentiators are typically:

  1. Does it measure dynamic or kinematic viscosity?
  2. Can it measure non-Newtonian samples?
  3. What sample volume is required?
  4. How easy it is to obtain a viscosity measurement?

RheoSense has taken the design of our viscometers one step further with our patented VROC® (Viscometer-Rheometer-on-a-Chip) technology, combining microfluidic and MEMS (Micro-Electro-Mechanical Systems) technologies, allowing for complete characterization of viscosity as a function of shear rate or temperature. What may be the most differentiating feature of our VROC powered viscometers is their exceptional repeatability and accuracy which makes them the only viscometers available today with the necessary capabilities to provide intrinsic viscosity measurements.

In Viscosity Measurements, VROC Technology, Proteins, viscosity, Intrinsic Viscosity, protein formulation, protein viscosity, VROC initium one plus

Importance of Viscosity: How to Measure it

In simplest terms, viscosity is defined as “the resistance to flow” and is often referred to as the thickness of a fluid. The concept of a fluid having a “thickness” has existed for thousands of years, however the term “viscosity” was not introduced until 1929. Even Newton referred to viscosity as “the lack of slipperiness of the parts of the liquid” (Sir Isaac Newton, Principia, 1687).

In Viscosity Measurements, VROC Technology, viscosity, shear rate, non-Newtonian, dynamic viscosity, kinematic viscosity, microfluidic, rectangular slit viscometer

Importance of viscosity in cell culture media

Cell culture media is essential for many in labs in academia, national laboratories, and the biotechnology industry. Cell culture media is vital for studying cellular processes, developing new drugs, and creating regenerative medicine (Yao and Asayama, 2017). Even emerging fields such as lab grown meat products require new types of media be developed and characterized (Gaydhane et al, 2018).

In Viscosity Measurements, Dulbecco′s Modified - Eagle′s Medium, Ham's F12, cell culture media, fetal bovine serum, DMEM, F12 Media

Webinar: Taming non-Newtonian Data with the WRM Correction Recording

Last week, we hosted a webinar on the Weissenberg-Rabinowitsch-Mooney Correction, also known as WRM correction. What is this correction? When you are using a viscometer to measure viscosity of a liquid, there is more than just one number that comes out. Using a viscometer, you can determine if your sample is Newtonian or non-Newtonian

In webinar, technical webinar, technical information, Event

Upcoming Webinar - June 24, 2020 11:00 am PST

Most fluids are non-Newtonian. What that means is that as the sample is exposed to shear rates, the viscosity can change (increase or decrease). Some samples display Newtonian behavior until a certain shear rate point where it changes the viscosity so it's imperative to be aware of all possibilities and expand your testing capabilities as wide as possible so you are prepared for all unknown. 

When measuring non-Newtonian samples on rheometers and viscometers, such solutions often violate the assumptions programmed into the instrumentation. Diving deeper, the assumption that the change in shear stress over shear rate is linear would then be violated. However, there is a way to work with non-Newtonian samples in such cases by using the Weissenberg-Rabinowitsch-Mooney Correction (WRM). 

In webinar