Brookfield DVPLUS Rotational Viscometer

Overview

The Brookfield DVPLUS Rotational Viscometer is an engineered precision instrument designed for reliable, repeatable viscosity measurement across a broad spectrum of industrial and research applications. Based on the well-established Couette principle—where torque generated by fluid resistance to rotational shear is measured at defined angular velocity—the DVPLUS delivers high-fidelity rheological data under controlled mechanical and thermal conditions. Its benchtop-fixed architecture ensures mechanical stability during extended testing cycles, while its wide dynamic range (1–320 million mPa·s) accommodates both low-viscosity solvents and highly structured pastes, gels, and polymer melts. The system operates within a standard ambient environment but integrates seamlessly with external temperature-controlled baths or heating jackets, supporting measurements from 0 °C up to 320 °C when paired with compatible accessories such as the DVP-94Y immersion temperature probe.

Key Features

• 5-inch full-color capacitive touchscreen interface with intuitive graphical navigation and real-time trend visualization of viscosity, torque, temperature, and rotational speed
• 740 discrete speed settings (0.01–1000 rpm in fine increments), enabling precise shear rate profiling for non-Newtonian fluid characterization
• Multi-unit display capability: viscosity (cP, mPa·s, P, Pa·s), torque (% torque, mN·m, dyne·cm), temperature (°C, °F, K), and spindle/speed configuration
• Advanced timing logic including time-to-target torque, time-to-target temperature, and programmable test duration—critical for quality control hold-time validation and thermal equilibration studies
• Automatic full-scale range (FSR) calculation and real-time max-viscosity indication based on selected spindle and speed combination
• Temperature compensation algorithm calibrated over ±5 °C deviation, improving measurement fidelity in variable lab environments
• Bilingual firmware architecture supporting eight languages: English, French, German, Portuguese, Spanish, Japanese, Korean, and Simplified Chinese
• Dual communication interfaces: USB 2.0 for direct PC tethering and Bluetooth 4.0 (optional) for wireless connectivity to host systems

Sample Compatibility & Compliance

The DVPLUS accommodates standard Brookfield spindles (SC4–42 series) and ultra-low-volume small-sample adapters (e.g., ULAD, SSA), making it suitable for Newtonian and non-Newtonian liquids, emulsions, suspensions, molten polymers, adhesives, coatings, food formulations, and pharmaceutical excipients. It complies with ASTM D2196 (Standard Test Methods for Rheological Properties of Non-Newtonian Materials), ISO 2555 (Plastics — Determination of Apparent Viscosity), and USP (Rheology). When operated with DVPlus Connect software and appropriate audit trail configuration, the system supports 21 CFR Part 11 compliance requirements—including electronic signature capture, user access controls, and immutable data logging—for regulated environments governed by FDA, EMA, or PMDA guidelines.

Software & Data Management

DVPlus Connect is a Windows-native desktop application that transforms the viscometer into a networked data acquisition node. It enables live streaming of all sensor outputs, synchronized timestamped logging (including metadata: operator ID, sample ID, environmental conditions), and export to CSV, Excel, or PDF formats. The software supports batch test sequencing, pass/fail limit definition per parameter, and automated report generation aligned with internal SOP templates. All data files include embedded instrument firmware version, calibration certificate ID, and hardware serial number—ensuring traceability for ISO/IEC 17025-accredited laboratories. Future mobile versions (iOS/Android) will extend remote monitoring capabilities without compromising data integrity.

Applications

• Quality assurance of lubricants, transformer oils, and hydraulic fluids per ASTM D445
• Rheological screening of inkjet inks, screen printing pastes, and conductive inks during formulation development
• Thermal stability assessment of thermosetting resins and epoxy prepolymers during cure profiling
• Batch release testing of topical pharmaceutical gels and ointments under USP criteria
• Viscosity-temperature correlation studies for food products including chocolate, dairy concentrates, and plant-based beverages
• Process validation support for continuous mixing, extrusion, and dispensing operations where real-time viscosity feedback is required

FAQ

What spindle configurations are supported by the DVPLUS?
The DVPLUS accepts all standard Brookfield L, R, and S series spindles, including helipath, T-bar, and vane geometries, via the universal quick-coupling adapter.
Is temperature control integrated into the base unit?
No—the DVPLUS itself does not include built-in heating or cooling. It requires external temperature regulation (e.g., circulating baths or heated jackets) and optional DVP-94Y probe for accurate bath temperature feedback.
Can DVPlus Connect be used for regulatory submissions?
Yes—when deployed with enabled audit trail, electronic signatures, and secure user roles, DVPlus Connect meets baseline requirements for data integrity in GxP-regulated environments.
How often does the instrument require recalibration?
Annual calibration is recommended; however, routine verification using NIST-traceable silicone oil standards (e.g., Brookfield STD series) should be performed before critical measurements.
Does the DVPLUS support shear rate or shear stress output?
While the DVPLUS reports torque and rotational speed directly, shear rate and shear stress values can be derived post-acquisition using known spindle geometry constants and Newtonian assumptions—or via third-party rheological analysis tools.