Brookfield 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.

• 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.