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

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"

This product can be configured based on your applications and there are multiple chip options you can choose from. Here is the chip selection guide!

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 ^oC
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
B	50	0.2	3,000	100,000	Small sample Medium viscosity


C	50	10	14,000	200,000	Small sample High viscosity


E	20	1	100,000	1,400,000	High shear

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.

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.

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

VISCOMETER SPECIFICATIONS

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

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

Understanding Fluid Behavior — Measuring Absolute Viscosity

Scientific Principle

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

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

FAQs

Basic

Pro

Request a Quote »

RheoSense, Inc.

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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 ^oC
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 Sample Volume

VISCOMETER SPECIFICATIONS

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

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

Understanding Fluid Behavior — Measuring Absolute Viscosity

Scientific Principle

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

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

FAQs

Basic

Pro

Request a Quote »

RheoSense, Inc.

Subscribe

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