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What our customers are saying about us
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Tinglei Gu, PhDBluefin Biomedicine, Inc
“RheoSense was recommended to us by the experts in the field. We are very happy with the sample testing service. It was fast and efficient. The turnaround time was less than a week. The report was clear and professionally written. Dave was easy and pleasant to communicate with. I would highly recommend RheoSense. We will definitely use them for future sample testing.”
Dr. Alex WollenbergSenior Scientist, Ionis Pharmaceuticals
"RheoSense has outstanding customer service. Whenever I am faced with a technical or instrument related question, they respond quickly, accurately, and ensure we have everything required so we can focus on making life saving therapeutics"
Justin HopkinsScientist I, Characterization Services
"I just have to say I am really excited about the level of service and communication your team has provided. You all are crushing it and I'll definitely give that feedback to our leadership team."
Alex Ayoub Generate BioMedicines
"I am not regularly running proteins of interest here to get viscosity data and the VROC performs extremely well (perhaps unsurprisingly).”
Mahoom Fard Canopy Growth
"I would like to mention (m-VROC®) is great instrument and I am really enjoying using it."
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Dr. Shamsheer MahammadSenior Principal Scientist

Based on my experience with RheoSense Initium, I can attest that the precision and accuracy achieved by RheoSense dilute solution viscometry are unparalleled.”

Check out Dr. Mahammad's technical talk on the Viscosity of Biopolymers here.

arizona state university
Professor Owen HildrethArizona State University

"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."

University of Arizona
Gregory E. Ogden, PhD The University of Arizona

"The trends in the viscosity data acquired with the microVISC™ across different temperatures and concentrations follow those seen in other studies [1-4]. Combined with the trends in activation energy found from data fitted to an Arrhenius model shows that the viscometer can deliver reliable temperature dependent viscosity data."


MIT's Gareth McKinley, PhD, and Chris Pipe, PhD

"Microfluidic devices offer several advantages compared to conventional rheometers in that they only require small volumes of fluid sample, they can impose high deformation rates without entering strongly inertial flow regimes, the absence of a free surface avoids evaporation, and they can potentially be used as a simple, disposable flow-through device."

Annie JensenCytovale

"In brief, we used the RheoSense to measure the viscosity of cellular suspensions. Our goal was to determine the dilution factor needed for the cell suspension to match a running buffer. As demonstrated in the graph this happens around a 10 fold sample dilution factor. Consistent sample viscosity will enable CytoVale to develop robust cellular assays for our core applications involving the high throughput mechanical measurement of cells.

The RheoSense viscometer enabled us to quickly and accurately measure small aliqouts of sample which was necessary due to limited amounts of biological material. Additionally the low volume allowed us to gather many replicates of data in order to accurately assess biological variability between and across samples. This capability allowed us to have much more robust data collection and higher sample sizes for each point on the curve as compared to using traditional capillary viscometry."


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Ross Clark, PhDDistinguished Research Fellow at CP Kelco
"The VROC® provides more measurement than conventional viscometers. This additional measurement is a key part in understanding the properties of polymers made by CP Kelco. It is capable of making measurements not possible with other instruments. Rotational instruments fail to deliver accurate measurements at these high shear rates and the capillary flow method is preferred. The ability of the RheoSense instrument to measure very small sample quantities is also useful. We have found the instrument to be accurate and reliable."
A large Swiss fragrance company

"My purpose was to find a viscometer that performed quickly, gave repeatable results, that agrees with the viscosity we measure in another department. I have used this for over 500 pure chemicals at this point. What Dave may have told you, that I can vouch for, is that we achieve triplicate measurements in under 2 minutes, with less than an entire pipette volume of 400 µL. The measurements are very repeatable. The portability and ease of use are terrific. The temperature is recorded, with 2 decimals of precision. I have used the software and found it good enough to copy and paste into Excel, easily. Or import a .CSV.

If you want to fully characterize the viscosity under a variety of temperatures and stress and strain conditions, then you’ll need a research grade expensive rheometer. I find that this microVISC™ does a wonderful job of distinguishing viscosity, the range I’m interested in is 5 – 1000 cP. Very often people need to know the viscosity at room temperature, and I love it when a single-purpose instrument is accurate, reliable, and affordable. The microVISC™ is all of those, and portable.

BTW, it has survived some pretty nasty chemicals. Also it’s so easy to use (load and press start), that summer interns have used it and produced low %RSD results."

iowa state university
Michael J. ForresterIowa State University
"I want to thank you both for all the work you did to get such a quick turn around on this. We have already had a chance to test this out, and it is proving to be extremely useful for our processes. Thank you again."
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Barry Vomocil, PhDHewlett Packard
"Capabilities of these VROC® chips are definitely a valuable tool and get a lot of good use. I appreciate RheoSense's responsiveness to our equipment maintenance needs."
David KrevorPhD
"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."
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Rankin SalinasLaboratory Coordinator
"Your Team have all been fantastic to work with! We appreciate the prompt messages and the open communication!"
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Kory GunnersonPrincipal Engineer, R&D
"RheoSense's Service is awesome! Thanks for helping make that happen so quickly."
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Dr. Sheng Zhang of Takeda Development Center Americas, Inc.Scientist, Analytical Development
"My experience interacting with RheoSense has been fantastic. RheoSense acknowledged that there have been team member changes in my team since the initial instrument was purchased, and you were very supportive in helping us get the instrument that had been sitting for a while up and running. We were provided helpful instructions on how to perform a diagnostic run for the long-sitting instrument and provided training to the new members of my team, including myself, even though the instrument was out of warranty at that time. So far, the instrument works nicely and I have acquired many precise and accurate data. In a recent call, we also discussed technical details and further applications of the instrument, such as temperature sweep tests and 96-well plate-based automation, and were provided many useful application notes. I am glad that you have provided us with the best option to purchase a service plan for the instrument, and we have purchased the plan. I am very excited to continue working with RheoSense to accomplish more great science!"
Ashvanttha Therapeutics
Dr. Jyoti WadhwaSenior Scientist - II, Pharmaceutical Development

"Thanks, a lot for coming onsite yesterday! It was great interaction with you both! I highly appreciate the training process! I love your obsession about SOPs, extremely helpful!

Further, many thanks for sharing the list of items and related link.

Last but not least I highly appreciate your efforts to educate me and supporting me with our sample analysis!

Looking forward to working more with RheoSense team!"

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Dr. Shashank ShuklaPrincipal Scientist, Novel Drug Delivery
"The m-VROC is working great."
Cannabis Developer

"I’ve recently been working with a RheoSense m-VROC ( m-VROC® II Viscometer — Controlled Shear Rates and Small Samples  22 ) and have gotten mPa-s values (equiv to cP) for all our our extracts and distillates. If you have the means, I recommend this instrument because of its temperature sweep capabilities to get viscosity measurements across any temperature you think you’ll be operating at.

While I wish I could share more, I will say it has helped tremendously with engineering our pathways."


Former microVISC Userfrom University
"I used the microVISC, with both low and high viscosity range microchannels and temperature control unit. It was very user-friendly and I had no problems using it daily"
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Dr. Jianwen XuAssociate Director, Formulation & Drug Product Development
"RheoSense team has provided good data to us from this study."
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Dr. Walter WearePrincipal Scientist
"Working great so far with what appears to be consistent results. "
Surf JohnsonProduct Engineer
"The viscometer worked flawlessly for our R&D project! "
Dr. Luca CorbelliniScience & R&D Lead
"We routinely use the microVISC and its temperature controller, and we are really satisfied with their operations with both high and low viscosity fluids".

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Contact us to place your viscometer order today!