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

m-VROC is the leading automated, small sample viscometer, featuring the widest dynamic range (high shear rate viscosity measurements up to 1,400,000 s-1) with as little as 50 microliters of sample.

m-VROC, small sample viscometer

 

VISCOMETER SPECIFICATIONS 

Minimum Sample Volume 50 µL
Maximum Shear Rate, s-1 0.5 ~ 1,400,000 s-1
Viscosity Range, mPa-s (cP)  0.2 ~ 100,000 cP
Temperature Range* 4~70 C
Accuracy 2% of Reading
Repeatability 0.5% of Reading
Temperature Sensor Built-In
Software Included
Non-Newtonian? Yes!
Temperature Sweep Yes!
Shear Rate Sweep Yes!

 

 

m-VROC Viscometer — Controlled Shear Rates and Small Samples 

m-VROC is the leading automated, small sample viscometer used worldwide by Fortune Global 500 companies and leading research universities. Capable of the most demanding applications including small sample protein therapeutics, m-VROC™ features the widest dynamic range (high shear rate viscosity measurements up to 1,400,000 s-1) with as little as 50 microliters of sample.

  • Accuracy: 2% of Reading
  • Repeatability: 0.5% of Reading
  • Viscosity Range: 0.2 ~ 100,000 mPa-s (or cP)
  • Shear Rate Range: 0.5 ~ 1,400,000 s -1
  • Small Sample Volume: 50 µL 
  • Viscometer Dimensions: 10" x 15.5" x 7"

m-VROC Viscometer Controlled Shear Rates and Small Samples 

Minimum Sample Volume 50 µL
Maximum Shear Rate, s-1 0.5 ~ 1,400,000 s-1
Viscosity Range, mPa-s (cP)  0.2 ~ 100,000 cP
Temperature Range* 4~70 C
Accuracy 2% of Reading
Repeatability 0.5% of Reading
Temperature Sensor Built-In
Software Included
Non-Newtonian? Yes!
Temperature Sweep Yes!
Shear Rate Sweep 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
B 50 0.2 3,000 100,000 Small sample
Medium viscosity
100
200
C 50 10 14,000 200,000 Small sample
High viscosity
100
200
E 50 1 100,000 1,400,000 High shear
100
200
 
*Chips can be custom made. Contact Us

m-VROC Viscometer Controlled Shear Rates and Small Samples 

Loading m-VROC Syringe Step 1: Load the syringe with your sample
tighten m-VROC syringe in chip enclosure Step 2: Tighten the syringe into the chip enclosure and secure it inside the thermal jacket
testing a sample with m-VROC Step 3: Bring down the top of the thermal jacket enclosure and lock it by turning the black thumb screw clockwise— you are ready to measure your sample!

 

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 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 Viscometer Controlled Shear Rates and Small Samples 

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