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hts-VROC™ Viscometer — High Temperature, High Shear Viscosity


A Quick Look: hts-VROC Key Capabilities:
• Accuracy: Up to 2% of Reading 
• Repeatability: 0.5% of Reading 
• Quick Viscosity Measurements: Less than One Minute 
• Viscosity Range: 0.2 – 100,000 mPa-s
• Minimum Sample Volume: 25 µL
• Shear Rate Range: 0.5 – 1,400,000 s-1
 

hts-VROC™ Viscometer — High Temperature, High Shear Viscosity


 
Full Specifications
 
• Minimum Sample Volume 25 µL
• Shear Rate Range, s-1 0.5 – 1,400,000 s-1
• Viscosity Range 0.2 – 100,000 mPa-s (cP)
• Temperature Stability ~ +/- 0.07 °C
• Accuracy Up to 2% of Reading
• Temperature Range ** 4  – 105 °C
hts-VROC_with_no_background
• Shear Rate & Temperature Sweeps Yes
• Sample Measuring Time Less Than One Minute
• Non-Newtonian? Yes
• Repeatability Up To 0.5% of Reading
• Evaporation, Air/Liquid Interference No

 

 

 

 

 

 

hts-VROC™ Viscometer — High Temperature, High Shear Viscosity


 

Operate Your hts-VROC In Three Steps:

hts-VROC™ Viscometer — High Temperature, High Shear Viscosity


 
Chip Configurations
 
Chip Types Flow Channel Depth (microns)  Max. Pressure (Pa-s) Max. Shear Rate (1/s) Application
A

50

100

200

300

10k Pa Full Scale

56,000

Small Sample Low Viscosity

B

50

100

200

300

40k Pa Full Scale 100,000 Small Sample Medium Viscosity
C

50

100

200

300

200k Pa Full Scale 200,000 Small Sample High Viscosity
E

50

100

200

1.8M Pa Full Scale 1,400,000  High Shear 
  

Popular hts-VROC Applications Based On Industries


 

1. Oil & Lubrication: Oil Analysis & Formulation of Lubricants (High Temperature & High Shear Rate)
2. Cannabis:  THC, CBD, Wax/Hash Oils
3. Biopharmaceutical: Antibody Therapeutics
4. Polymer: Single Point Intrinsic Viscosity
5. Inks: Ceramic Inks, Water-Based Inkjet Inks, Conductive Inks
6. Miscellaneous:  Solubility, Intrinsic Viscosity, Volatile Compounds, Non-Newtonian Characterization 

 

hts-VROC Overview


 

Because viscosity is heavily dependent on temperature, all RheoSense viscometers come with the option of adding temperature control. Different applications may require high temperature viscosity analysis for instance, the oil/lubricant industry. When working with lubricants, specific shear rates and temperature ranges have to be tested to mimic the conditions in which the lubricants will actually perform in such as in the bearings of internal combustion engines. 
 

To meet this requirement, RheoSense introduced the hts-VROC™ model. This system provides the same features and specifications as m-VROC®, but hts-VROC provides the added capability to measure at temperatures as high as 105 °C.

Competitive Advantages


 

1. Main Advantages: 

⇒ Fast Results: < 1 Minute
⇒ Unattended Shear Rate & Temperature Sweep Measurements
⇒ Non-Newtonian Characterization: Ability to control the shear rate
⇒ Data Is Not User Dependent, Unlike Alternative Methods
⇒ High Temperature Capabilities (Up to 105 °C)
⇒ Closed System - No Air Interface 

2. Secondary Advantages:

⇒ Measures Absolute Viscosity (Not Referenced)

⇒ Wide Viscosity Range: 0.2 — 100,000 cP

⇒ High Shear (Up to 1.400,000 s-1)

⇒ Ability To Test Low Viscosity Samples At High Shear Rates

3. Additional Advantages:

⇒ Peltier-Based Temperature Control (TC) 

⇒ Fast & Easy Clean Up: No Special Solvents Needed

⇒ Minimal Calibration (Suggested ~1x Per Year) 

⇒ Intuitive User Interface: PC Compatible

What Is VROC Technology?


 

Understanding Fluid Behavior — Measuring Absolute Viscosity
 
With VROC® Technology, the standard principle for viscosity measurements are visualized on a micron scale by combining microfluidic with MEMS (Micro-Electro-Mechanical-Systems) sensor technology. The VROC Chip provides a new platform that accommodates small sample volume while allowing a wide dynamic range and absolute precision beyond the capabilities of a traditional rotational rheometer. 
VROC Viscometer Rheometer on a Chip
 
Scientific Principle:
 
The VROC Chip (or cell) contains a rectangular slit flow channel with uniform width and depth. The sample is injected at a constant flow rate while the MEMS pressure sensors measure the pressure drop between each sensor. The pressure drop is proportional to the shear stress, which viscosity is then calculated by dividing the shear stress by the shear rate described in the principle.

Chip Selection


Choosing the VROC chip(s) for your instrument depends on the user's desired shear rate range, viscosity range, and particle size (if applicable).
 
RheoSense offers transparent dummy chips with which one an study the effectiveness of candidate cleaning solvents. These dummy chips can also be used for sample compatibility and configuring cleaning protocols without the risk of breaking the VROC Chip.
 
VROC Dummy Chip:
 
Flow Channel Variability of: 50 µm, 100 µm, 200 µm, & 300 µm
 
RheoSense VROC Dummy Chip, 50 µm
 
Figure Above: VROC Dummy Chip, 50 µm
 
Sample being pushed into Dummy Chip
 
Figure Above: Sample is pushed through the dummy chip via pipette

Key Applications


 
 Formulating New Lubricants
Developing New Inkjet Inks, Cosmetics, or Food Additives
Understanding Temperature Effects on Drug Stability
Refining New Polymers for Use In PaintsPerformance Coatings, or EOR Fluids
• Researching Viscous Behaviors in General Chemistry Applications
 

Explore Our Archives

hts-VROC Node Part Number List:


 

To identify specific hts-VROC parts, cross reference the part number (p/n) using the chart below. 
 
If your parts are not listed here, please contact us directly here.
 
T-VROC-AXX VROC A Chip: 10k Pa Full Scale VROC-300-1.0H 1 mL Syringe with UHMPE Seal  
T-VROC-BXX VROC B Chip: 40k Pa Full Scale VROC-300-10-AD High Temperature 10 mL Syringe 
T-VROC-CXX VROC A Chip: 200k Pa Full Scale VROC-300-10-AD-HTS 10 mL Syringe for High Temperatures
T-VROC-EXX VROC A Chip: 1.8M  Pa Full Scale VROC-300-100DVA ILS 100 µL, Zero Dead Volume Adjustable Syringe
T-E-VROC-A20 e-VROC A Chip for hts-VROC, 10k Pa Full Scale, Max. Temp 100 °C VROC-300-500 500 µL Syringe
T-E-VROC-B20 e-VROC B Chip for hts-VROC, 40k Pa Full Scale, Max. Temp 100 °C VROC-300-000 Union & Plastic Needle Assembly
T-E-VROC-C20 e-VROC C Chip for hts-VROC, 200k Pa Full Scale, Max. Temp 100 °C VROC-300-001 0.5 mm ID Plastic Needle
T-E-VROC-E20 e-VROC A Chip for hts-VROC, 1.8M Pa Full Scale, Max. Temp 100 °C VROC-300-002 1.0 mm ID Plastic Needle
VROC-800-50 50 µm Dummy Chip VROC-300-6 1.0 mm Union with 35 µm S.S. Mesh Filter & Needle Assembly
VROC-800-100 100 µm Dummy Chip  VROC-400-3  1/4 - 28 Union
VROC-800-200 200 µm Dummy Chip  VROC-400-7  1/4 - 28 Black Cap 
VROC-80-300  300 µm Dummy Chip  VROC-400-12  Inlet Valve & Inlet Tubing Assembly (Inlet Tubing Diameter of 250, 500, or 1000 µm) 
T-VROC-600-10 1 mL Syringe Jacket for High Temperature Measurements VROC-700-2  Water Bath w/ Temperature Control, 4 — 105 °C (Flourinert Compatible)
T-VROC-600-9 10 mL Syringe Jacket for High Temperature Measurements VROC-700-3  Water Bath w/ Temperature Control, 4 — 80 °C (Flourinert Compatible) 
VROC-700-5 Water Bath w/ Temperature Control, 4 — 70 °C  hts-VROC

Ready To See For Yourself?


 

If you're curious to learn more & see if this instrument can work for you, register for a live demonstration of the hts-VROC viscometer for free!
 

hts-VROC_with_no_background

• Other questions/inquiries? Contact us by clicking below!Contact Us

Popular hts-VROC Applications Based On Industries


 

1. Oil & Lubrication: Oil Analysis & Formulation of Lubricants (High Temperature & High Shear Rate)
2. Cannabis:  THC, CBD, Wax/Hash Oils
3. Biopharmaceutical: Antibody Therapeutics
4. Polymer: Single Point Intrinsic Viscosity
5. Inks: Ceramic Inks, Water-Based Inkjet Inks, Conductive Inks
6. Miscellaneous:  Solubility, Intrinsic Viscosity, Volatile Compounds, Non-Newtonian Characterization 

 

hts-VROC Overview


 

Because viscosity is heavily dependent on temperature, all RheoSense viscometers come with the option of adding temperature control. Different applications may require high temperature viscosity analysis for instance, the oil/lubricant industry. When working with lubricants, specific shear rates and temperature ranges have to be tested to mimic the conditions in which the lubricants will actually perform in such as in the bearings of internal combustion engines. 
 

To meet this requirement, RheoSense introduced the hts-VROC™ model. This system provides the same features and specifications as m-VROC®, but hts-VROC provides the added capability to measure at temperatures as high as 105 °C.

Competitive Advantages


 

1. Main Advantages: 

⇒ Fast Results: < 1 Minute
⇒ Unattended Shear Rate & Temperature Sweep Measurements
⇒ Non-Newtonian Characterization: Ability to control the shear rate
⇒ Data Is Not User Dependent, Unlike Alternative Methods
⇒ High Temperature Capabilities (Up to 105 °C)
⇒ Closed System - No Air Interface 

2. Secondary Advantages:

⇒ Measures Absolute Viscosity (Not Referenced)

⇒ Wide Viscosity Range: 0.2 — 100,000 cP

⇒ High Shear (Up to 1.400,000 s-1)

⇒ Ability To Test Low Viscosity Samples At High Shear Rates

3. Additional Advantages:

⇒ Peltier-Based Temperature Control (TC) 

⇒ Fast & Easy Clean Up: No Special Solvents Needed

⇒ Minimal Calibration (Suggested ~1x Per Year) 

⇒ Intuitive User Interface: PC Compatible

What Is VROC Technology?


 

Understanding Fluid Behavior — Measuring Absolute Viscosity
 
With VROC® Technology, the standard principle for viscosity measurements are visualized on a micron scale by combining microfluidic with MEMS (Micro-Electro-Mechanical-Systems) sensor technology. The VROC Chip provides a new platform that accommodates small sample volume while allowing a wide dynamic range and absolute precision beyond the capabilities of a traditional rotational rheometer. 
VROC Viscometer Rheometer on a Chip
 
Scientific Principle:
 
The VROC Chip (or cell) contains a rectangular slit flow channel with uniform width and depth. The sample is injected at a constant flow rate while the MEMS pressure sensors measure the pressure drop between each sensor. The pressure drop is proportional to the shear stress, which viscosity is then calculated by dividing the shear stress by the shear rate described in the principle.

Chip Selection


Choosing the VROC chip(s) for your instrument depends on the user's desired shear rate range, viscosity range, and particle size (if applicable).
 
RheoSense offers transparent dummy chips with which one an study the effectiveness of candidate cleaning solvents. These dummy chips can also be used for sample compatibility and configuring cleaning protocols without the risk of breaking the VROC Chip.
 
VROC Dummy Chip:
 
Flow Channel Variability of: 50 µm, 100 µm, 200 µm, & 300 µm
 
RheoSense VROC Dummy Chip, 50 µm
 
Figure Above: VROC Dummy Chip, 50 µm
 
Sample being pushed into Dummy Chip
 
Figure Above: Sample is pushed through the dummy chip via pipette

Key Applications


 
 Formulating New Lubricants
Developing New Inkjet Inks, Cosmetics, or Food Additives
Understanding Temperature Effects on Drug Stability
Refining New Polymers for Use In PaintsPerformance Coatings, or EOR Fluids
• Researching Viscous Behaviors in General Chemistry Applications
 

Explore Our Archives

hts-VROC Node Part Number List:


 

To identify specific hts-VROC parts, cross reference the part number (p/n) using the chart below. 
 
If your parts are not listed here, please contact us directly here.
 
T-VROC-AXX VROC A Chip: 10k Pa Full Scale VROC-300-1.0H 1 mL Syringe with UHMPE Seal  
T-VROC-BXX VROC B Chip: 40k Pa Full Scale VROC-300-10-AD High Temperature 10 mL Syringe 
T-VROC-CXX VROC A Chip: 200k Pa Full Scale VROC-300-10-AD-HTS 10 mL Syringe for High Temperatures
T-VROC-EXX VROC A Chip: 1.8M  Pa Full Scale VROC-300-100DVA ILS 100 µL, Zero Dead Volume Adjustable Syringe
T-E-VROC-A20 e-VROC A Chip for hts-VROC, 10k Pa Full Scale, Max. Temp 100 °C VROC-300-500 500 µL Syringe
T-E-VROC-B20 e-VROC B Chip for hts-VROC, 40k Pa Full Scale, Max. Temp 100 °C VROC-300-000 Union & Plastic Needle Assembly
T-E-VROC-C20 e-VROC C Chip for hts-VROC, 200k Pa Full Scale, Max. Temp 100 °C VROC-300-001 0.5 mm ID Plastic Needle
T-E-VROC-E20 e-VROC A Chip for hts-VROC, 1.8M Pa Full Scale, Max. Temp 100 °C VROC-300-002 1.0 mm ID Plastic Needle
VROC-800-50 50 µm Dummy Chip VROC-300-6 1.0 mm Union with 35 µm S.S. Mesh Filter & Needle Assembly
VROC-800-100 100 µm Dummy Chip  VROC-400-3  1/4 - 28 Union
VROC-800-200 200 µm Dummy Chip  VROC-400-7  1/4 - 28 Black Cap 
VROC-80-300  300 µm Dummy Chip  VROC-400-12  Inlet Valve & Inlet Tubing Assembly (Inlet Tubing Diameter of 250, 500, or 1000 µm) 
T-VROC-600-10 1 mL Syringe Jacket for High Temperature Measurements VROC-700-2  Water Bath w/ Temperature Control, 4 — 105 °C (Flourinert Compatible)
T-VROC-600-9 10 mL Syringe Jacket for High Temperature Measurements VROC-700-3  Water Bath w/ Temperature Control, 4 — 80 °C (Flourinert Compatible) 
VROC-700-5 Water Bath w/ Temperature Control, 4 — 70 °C  hts-VROC

Ready To See For Yourself?


 

If you're curious to learn more & see if this instrument can work for you, register for a live demonstration of the hts-VROC viscometer for free!
 

hts-VROC_with_no_background

• Other questions/inquiries? Contact us by clicking below!Contact Us

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