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m-VROC® II Viscometer — Controlled Shear Rates and Small Sample Volume

m-VROC II is the next generation leading semi-automated, small sample viscometer, featuring the widest dynamic range (high shear rate viscosity measurements up to 2,020,000 s-1) with as little as 15 microliters of sample.

m-VROC II (nbg)

 

VISCOMETER SPECIFICATIONS 

Minimum Sample Volume 15 µL
Shear Rate, s-1 0.86 ~ 2,020,000
Viscosity Range, mPa-s (cP)  0.4 ~ 200,000 cP
Temperature Range* 4~70 C
Accuracy 2% of Reading
Repeatability 0.5% of Reading
Temperature Sensor Built-In
Barcode Reader Function Included!
21CFR Part II Yes!
Non-Newtonian? Yes!
Temperature Sweep Yes!
Shear Rate Sweep Yes!

m-VROC II Viscometer — Controlled Shear Rates and Small Samples 

m-VROC II is the next generation of leading semi-automated, small sample viscometer. Capable of the most demanding applications including small sample protein therapeutics, m-VROC II features the widest dynamic range (high shear rate viscosity measurements up to 2,020,000 s-1) with as little as 15 microliters of sample.

  • Accuracy: 2% of Reading
  • Repeatability: 0.5% of Reading
  • Viscosity Range: 0.4 ~ 200,000 mPa-s (or cP)
  • Shear Rate Range: 0.86 ~ 2,020,000 s -1
  • Small Sample Volume: 15 µL 
  • Viscometer Dimensions:  11.6" x 16" x 9" 

m-VROC II Viscometer Controlled Shear Rates and Small Samples 

Minimum Sample Volume 15 µL
Shear Rate Range, s-1 0.5 ~ 2,020,000 s-1
Viscosity Range, mPa-s (cP)  0.86 ~ 200,000 cP
Temperature Range* 4~70 C
Accuracy 2% of Reading
Repeatability 0.5% of Reading
Temperature Sensor Built-In
Software Included
Barcode Reader Function Included!
Non-Newtonian? Yes!
Temperature Sweep Yes!
Shear Rate Sweep Yes!
21 CFR Part 11  Yes!

*Temperature ranges can be extended
*Chip depths can be customized based on your application! 


 Selection of Chips*:

Types Flow channel depth (µm) Min viscosity (mPa-s) Max viscosity (mPa-s) Maximum shear rate (1/s) Application
A 50 0.2 100 56,000 Small sample
Low viscosity
100
200/300
B 50 0.2 3,000 100,000 Small sample
Medium viscosity
100
200/300
C 50 10 14,000 200,000 Small sample
High viscosity
100
200/300
E 50 1 100,000 1,400,000 High shear
100
200
 
*Chips can be custom made. Contact Us

Understanding Fluid Behavior — Measuring Absolute Viscosity

With VROC® Technology, RheoSense took the standard principles of rheometry and created a dynamic micro-sample viscometer by adding microfluidics while reducing the size of the device with MEMS (micro-electrical mechanical systems) manufacturing. The result was a new platform which offers capabilities that are well beyond the limits of conventional viscometers in not only the sample volumes required, but the measurement range and precision.

VROC Viscometer Rheometer on a Chip

Scientific Principle

The measuring cell or “chip” contains a rectangular slit flow channel constructed of borosilicate glass, with a uniform cross-sectional area. The sample is injected at a constant flow rate though the flow channel where multiple pressure sensors mounted within the base monitor the pressure drop from the inlet to the outlet. The pressure drop is correlated with the shear-stress at the boundary wall. The shear rate and shear stress are directly related to the geometry of the rectangular slit and the flow rate which allow for viscosity measurements. 

Read more on our technology page!

m-VROC II Viscometer Controlled Shear Rates and Small Samples 

  • Bio-pharmaceutical & Protein Therapeutics
    • Bio-Fluid 
    • Injectability
    • RNA Therapeutics 
  • Ceramic
  • Coatings
  • Cosmeceuticals
  • Food & Beverages
  • Fracking
  • Inks
    • Conductive 
    • Ceramic
    • Oils & Lubricants
  • Rechargeable Battery and Fuel Cells

Browse Full Application  Note Library

m-VROC II Viscometer Controlled Shear Rates and Small Samples 

View Filem-VROC® II Specifications    Size: (761.5 KB)
View FileVROC Viscometer Comparison  Size: (674.7KB)

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