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revolutionizing material characterization with viscosity

Providing the best viscometer solutions to industries for proper material characterization


RheoSense is a global high tech company based in the Bay Area of California. Our innovative viscometers feature patented Viscometer/Rheometer-on-a-Chip (VROC®) technology.  Utilizing state-of-the-art MEMS and microfluidics breakthroughs that redefine the viscometry industry, our instruments offer the smallest sample volume per measurement coupled with exceptional ease-of-use and accuracy.  We are the leader in biotechnology, pharmaceutical, and the emerging protein therapeutics industries. RheoSense instruments have been rigorously tested, approved, and adopted worldwide by Fortune Global 500 companies and leading research universities. 



RheoSense was founded in 2001 by Dr. Seonggi Baek. Since the beginning, our patented VROC® technology is accredited in the scientific field as the innovative method of bringing ease when it comes to viscosity measurements

m-VROC d


Production of flagship small sample m-VROC® and microVISC™ viscometers 



Release of extensional viscometer capable of measuring apparent extensional viscosity

automatic viscometer for viscosity fingerprinting
Automatic Viscometer


RheoSense, Inc. introduces the first automatic viscometer equipped with automatic sample loading and cleaning. The viscometer can measure absolute viscosity as a function of shear or temperature, which allows unique viscosity fingerprinting of your samples.

VROC initium one plus product image-1
VROC® initium one plus


RheoSense, Inc. introduces the VROC initium one plus - the leading automatic viscometer that measures viscosity with the highest accuracy (2% of reading) and repeatability (0.5% of reading) and acts as a workhorse for your material characterization.

Chip Cleaning Station - No BDG (microVISC) (1)
Chip Cleaning Station


Release of the highly requested chip cleaning station, capable of cleaning VROC® chips in  under 10 minutes!

Why measure viscosity?

It's never too late to measure accurate viscosity measurements but it's also never too early! Join hundreds of industry and academic professionals. Get a head start on your research and quality control processes with accurate measurements. Work smart, not hard!


Plus more application notes


Papers from customers and counting!


Recorded Webinars


All RheoSense viscometers require only small sample volume, control from low to very high shear rates, and measure true viscosity of Newtonian and non-Newtonian liquids.


Our team of support & application engineers can assist with services such as calibration, sample testing, and viscometer maintenance. 

Application Notes

Download our application notes and technical details where we explain data, dive into in-depth rheological concepts, and more!


Access our library of recorded webinars or sign up for live sessions to hear our rheology experts as they share their invaluable viscosity insights! 

Want to learn more about our products, services or applications? Contact us to talk to a specialist! 

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Success Stories

"Darn, that little thing works great [microVISC]. Good job! I did a couple of known control samples, which measured bang-on exact with literature values. And then had no difficulties with my biological materials."

Dr. David Krevor
Slip Chip

"At Arizona State University, our research focuses on developing ink chemistries for additive manufacturing from the nanometer to the centimeter scales. To achieve this goal, we must precisely control the rheology properties of our inks. The RheoSense microVISC™ has been instrumental in our lab to measure and monitor the viscosity of our research inks throughout the day. The tool is extremely simple to use and its small sample volume saves money for some of the more expensive inks. Additionally, the use of affordable, disposable syringes saves us considerable time compared to cleaning a traditional rheometer ten times a day.
Overall, we would recommend this tool to other groups looking for an easy-to-use rheometer for daily lab use. "

Professor Owen Hildreth
Arizona State University

"I would like to mention (m-VROC®) is a great instrument and I am really enjoying using it"

Mahoom Fard
Canopy Growth


How will we use the information about you?

Handled with the utmost confidentiality. Your data will be stored to send regular technical announcements including application notes, webinars, white papers. We do not sell data or will be providing it to third parties with the exception of our international distributors in the cases which the inquiry is interested in a formal quote or anything related to the international business respective of the international country.

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Blog, News & Events

Stay up to date with our most recent applications, webinars, news and events shared on our blog. 

Clients & Partners

RheoSense instruments have been rigorously tested, approved, and adopted worldwide by Fortune Global 500 companies and leading research universities.

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