Laboratory Viscometers

DVNext Cone/Plate Rheometer

Precision Rheological Analysis for Small Sample Volumes

DVNext Cone/Plate Rheometer is designed for those who require precise viscosity measurements of small sample volumes. Featuring an easy-to-change magnetic cone/plate system and advanced electronic controls, the DVNext Rheometer provides the accuracy and repeatability necessary for developing complete rheological data.

Determine Absolute Viscosity of Small Samples:
Accurately measure the viscosity of samples as small as 0.5–2.0 mL, making this ideal for limited or precious materials.
Precise Shear Rates:
Obtain detailed flow curve behavior of materials with precise shear rates, allowing for comprehensive analysis of fluid dynamics.
Rapid Temperature Control:
Benefit from quick temperature adjustments due to the small sample size, enhancing efficiency and reducing wait times during testing.
Magnetic Coupling Attachment:
Simplify spindle attachment and removal with a magnetic coupling system, streamlining setup and minimizing handling errors.
Electronic Gap Adjustment:
Experience easier setup and increased throughput with electronic gap adjustment, reducing manual intervention and enhancing repeatability.
Touch Screen Display on DVNext Rheometers:
Enjoy an intuitive user interface with a 7” touch screen display, offering direct access to all features and enhancing user experience.
Auto-Zero Function:
Ensure precision torque measurement with the auto-zero function, which automatically calibrates the instrument for optimal accuracy.
Auto-Range Function:
Automatically define the full-scale range (FSR) for all spindle/speed combinations, simplifying setup and ensuring accurate measurements across a wide range of conditions.
High Torque Measurement Accuracy:
Achieve reliable results with a torque measurement accuracy of 1% of the full-scale range, ensuring consistent performance.
Exceptional Repeatability: Benefit from a repeatability of 0.2% of the full-scale range, providing consistent and reliable data across multiple tests.

PRINCIPLE OF OPERATION

DVNext Cone/Plate Rheometer operates by measuring the torque required to rotate a cone spindle immersed in a small sample volume of fluid. The resistance to the cone's rotation, caused by the fluid, is directly proportional to the shear stress. This torque is then used to calculate the fluid's absolute viscosity in centipoise (mPa·s). The precise relative position between the cone and plate is maintained through a simple mechanical setup without the need for external gauges.

VERSATILITY OF APPLICATION

DVNext Rheometer offers a broad range of shear rates and viscosity measurements, making it suitable for various applications. Its small sample volume requirement is ideal for testing materials where sample availability is limited, such as biological fluids or expensive formulations. The instrument supports multiple cone spindles, which can be calibrated for specific applications.

ENHANCED CONTROL AND COMPLIANCE

Digital Leveling:
Ensures consistent setup and accurate measurements.
21 CFR Part 11 Compliance:
Optional compliance for regulated industries, with features like electronic signatures, audit trails, and secure data management.
LIMS Connectivity:
Optional Ethernet and LIMS connectivity for seamless integration with laboratory management systems.

DVNXLVCP or DVNXLVDJG Models:
- Viscosity Range:
  - With Cone Spindle CPA-40Z or CPM 40-Z: 0.1 - 3K cP (mPa·s)
  - With Cone Spindle CPA-41Z or CPM 41-Z: 0.5 - 11K cP (mPa·s)
  - With Cone Spindle CPA-42Z or CPM 42-Z: 0.2 - 6K cP (mPa·s)
  - With Cone Spindle CPA-51Z or CPM 51-Z: 2 - 48K cP (mPa·s)
  - With Cone Spindle CPA-52Z or CPM 52-Z: 3 - 92K cP (mPa·s)
- Sample Volume: 0.5mL to 2.0mL (Depending on the spindle used)
- Shear Rate: 2.0N to 7.5N sec⁻¹ (Depending on the spindle used)
- Speeds: RPM 0.01 - 250 with 2.6K increments

DVNXRVCJG or DVNXRVDJG Models:
- Viscosity Range:
  - With Cone Spindle CPA-40Z or CPM 40-Z: 1 - 32K cP (mPa·s)
  - With Cone Spindle CPA-41Z or CPM 41-Z: 5 - 122K cP (mPa·s)
  - With Cone Spindle CPA-42Z or CPM 42-Z: 2 - 64K cP (mPa·s)
  - With Cone Spindle CPA-51Z or CPM 51-Z: 20 - 512K cP (mPa·s)
  - With Cone Spindle CPA-52Z or CPM 52-Z: 39 - 983K cP (mPa·s)
- Sample Volume: 0.5mL to 2.0mL (Depending on the spindle used)
- Shear Rate: 2.0N to 7.5N sec⁻¹ (Depending on the spindle used)
- Speeds: RPM 0.01 - 250 with 2.6K increments
DVNXHACJG or DVNXHADJG Models:
- Viscosity Range:
  - With Cone Spindle CPA-40Z or CPM 40-Z: 2.6 - 65K cP (mPa·s)
  - With Cone Spindle CPA-41Z or CPM 41-Z: 10 - 245K cP (mPa·s)
  - With Cone Spindle CPA-42Z or CPM 42-Z: 5 - 128K cP (mPa·s)
  - With Cone Spindle CPA-51Z or CPM 51-Z: 41 - 1M cP (mPa·s)
  - With Cone Spindle CPA-52Z or CPM 52-Z: 78 - 2M cP (mPa·s)
- Sample Volume: 0.5mL to 2.0mL (Depending on the spindle used)
- Shear Rate: 2.0N to 7.5N sec⁻¹ (Depending on the spindle used)
- Speeds: RPM 0.01 - 250 with 2.6K increments
DVNXHBCJG or DVNXHBDJG Models:
- Viscosity Range:
  - With Cone Spindle CPA-40Z or CPM 40-Z: 10.5 - 261K cP (mPa·s)
  - With Cone Spindle CPA-41Z or CPM 41-Z: 39 - 982K cP (mPa·s)
  - With Cone Spindle CPA-42Z or CPM 42-Z: 20 - 512K cP (mPa·s)
  - With Cone Spindle CPA-51Z or CPM 51-Z: 163 - 4M cP (mPa·s)
  - With Cone Spindle CPA-52Z or CPM 52-Z: 314 - 7.8M cP (mPa·s)
- Sample Volume: 0.5mL to 2.0mL (Depending on the spindle used)
- Shear Rate: 2.0N to 7.5N sec⁻¹ (Depending on the spindle used)
- Speeds: RPM 0.01 - 250 with 2.6K increments

Notes:

B = 1 Billion; M = 1 million; cP = Centipoise; mPa·s = Millipascal·seconds; mL = Milliliter; N = RPM

*Viscosity range depends on the cone spindle selected.

DVNXHB Model:

Viscosity Range: 800 cP to 320M cP (mPa·s)

Speed Range: 0.1 - 250 RPM

Speed Increments: 2.6K

Instrument: DVNext Cone/Plate Rheometer
Lab Stand: Secure and stable stand for consistent testing
Carrying Case: For easy transportation and protection of the instrument
Requires: At least one CPA or CPM spindle and one CPA sample cup to operate

RheocalcT Software: Streamline data collection and analysis with comprehensive software solutions.
Label Printer: Efficiently print labels for easy sample identification and organization.
Barcode Scanner: Simplify data entry and sample tracking with a handheld barcode scanner.
Ball Bearing Suspension: Standard in high torque instruments, ensuring smooth and precise operation.
Embedded Temperature Probe: Achieve accurate temperature measurements within your samples.
Sample Cup: Compatible cup designed to hold samples securely during testing.
Small Sample Adapter: Perfect for accurate testing with small sample volumes.
Additional Cone Spindles: Expand your measurement capabilities with extra spindles.
Magnetic Coupling: For secure and stable spindle connections.
Protective Touch Screen: Shield your device's screen from damage while maintaining usability.
UL Adapter: Designed for low-viscosity measurements.
Temperature Bath: Maintain consistent temperatures for reliable sample testing.

WHY CHOOSE THE DVNEXT CONE/PLATE RHEOMETER?

Precision and Effeciency
DVNext Rheometer is designed for high-precision viscosity measurements, particularly in small sample volumes, making it ideal for research and development applications.
Ease of Use
With features like digital leveling and magnetic coupling, the DVNext Rheometer simplifies the testing process, reducing setup time and potential errors.
Compliance and Connectivity
Optional features like 21 CFR Part 11 compliance and LIMS connectivity make the DVNext Rheometer suitable for regulated environments and seamless data integration.