Brookfield DVPlus Advanced Rotational Viscometer
| Brand | Brookfield |
|---|---|
| Origin | USA |
| Model | DVPlus |
| Display | 5-inch full-color touchscreen |
| Speed Control | 740 programmable RPM increments (0.1–200 rpm) |
| Viscosity Range | 1 cP to 320,000,000 cP (depending on spindle and speed selection) |
| Accuracy | ±1.0% of full-scale reading |
| Repeatability | ±0.2% |
| Torque Measurement | 0.1–100% of full-scale torque (mN·m, dyne·cm, %) |
| Temperature Compensation | ±5°C |
| Interface | USB + Bluetooth (DVPlus CONNECT compatible) |
| Optional Accessory | RTD temperature probe (DVP-94Y) |
| Language Support | English, French, German, Portuguese, Spanish, Japanese, Chinese |
| Compliance | Designed for GLP/GMP environments |
Overview
The Brookfield DVPlus is a high-precision rotational viscometer engineered for reliable, repeatable viscosity measurement across diverse material classes—from low-viscosity solvents to highly structured pastes and semi-solids. Based on the Couette principle, it employs controlled shear rate via precisely regulated spindle rotation within a stationary sample cup (or vice versa in coaxial cylinder configurations), enabling quantification of dynamic viscosity (η) in centipoise (cP), millipascal-seconds (mPa·s), poise (P), or pascal-seconds (Pa·s). Its modular spindle architecture—compatible with LV, RV, HA, and HB series spindles—allows seamless adaptation to varying rheological profiles without hardware replacement. The instrument operates under ISO 2555, ASTM D2196, and USP compliant methodologies, making it suitable for QC laboratories, R&D facilities, and regulatory-submission environments where traceability and measurement integrity are non-negotiable.
Key Features
- 5-inch high-resolution color touchscreen with intuitive, context-aware UI—provides real-time visualization of viscosity, torque (%FSR), temperature (°C/°F/K), RPM, spindle ID, and step-program status
- 740 discrete speed increments (0.1–200 rpm) offering exceptional resolution for fine-tuning shear rate profiles and optimizing sensitivity across wide dynamic ranges
- Auto-range calculation logic: dynamically computes maximum measurable viscosity at current spindle/RPM combination based on 100% torque full-scale limit
- Dual connectivity: native USB host port for direct PC communication and Bluetooth 4.2 LE for wireless pairing with the DVPlus CONNECT mobile application (iOS/Android)
- Integrated time-based measurement modes: torque-vs.-time, temperature-vs.-time, and stop-time triggers support thixotropy, gelation, and structural recovery analysis
- Temperature compensation algorithm adjusts viscosity readings for ambient thermal drift up to ±5°C—critical for uncontrolled lab environments
- Multi-language firmware (7 languages) facilitates global deployment and cross-functional team operation without translation overhead
Sample Compatibility & Compliance
The DVPlus accommodates samples ranging from Newtonian fluids (e.g., mineral oils, ethanol) to weakly structured non-Newtonians (e.g., latex paints, cosmetic emulsions) and yield-stress materials (e.g., greases, adhesives), provided appropriate spindle geometry and test protocols are selected. LV spindles enable measurements down to 1 cP; HB spindles extend upper range to 320 million cP. All spindle sets comply with ASTM D1896 and ISO 3219 dimensional tolerances. When paired with the optional DVP-94Y RTD probe, temperature-controlled testing meets ASTM D445 and ISO 3104 specifications. Instrument firmware supports electronic signature capture, user-level access control, and exportable audit trails—enabling alignment with FDA 21 CFR Part 11, EU Annex 11, and GLP/GMP documentation standards.
Software & Data Management
DVPlus CONNECT provides cloud-synced configuration storage, method templating, and real-time remote monitoring. Raw data exports as CSV or Excel-compatible files include timestamps, metadata (operator ID, calibration date, environmental conditions), and calculated parameters (shear stress, apparent viscosity, thixotropic area). For enterprise integration, the instrument supports OPC UA-compliant data streaming to LIMS or MES platforms. All firmware updates are digitally signed and version-logged to ensure configuration integrity during validation lifecycle management.
Applications
- Quality control of lubricants, fuels, and hydraulic fluids per ASTM D445
- Rheological profiling of personal care formulations (shampoos, lotions) under variable shear conditions
- Stability assessment of pharmaceutical suspensions and ointments per USP
- Process consistency verification for industrial coatings, inks, and adhesives
- Educational instruction in polymer science, food engineering, and colloid chemistry laboratories
- Pre-validation screening for higher-tier rheometers prior to complex oscillatory testing
FAQ
What spindle types are supported by the DVPlus?
LV, RV, HA, and HB series spindles—all manufactured to Brookfield’s ISO 3219-certified dimensional specifications.
Is temperature control built-in?
No internal Peltier or bath coupling; however, the instrument accepts external temperature-controlled jackets and integrates seamlessly with the DVP-94Y RTD probe for ambient-corrected readings.
Can the DVPlus meet FDA 21 CFR Part 11 requirements?
Yes—when deployed with validated DVPlus CONNECT workflows, role-based authentication, electronic signatures, and immutable audit logs satisfy electronic record and signature criteria.
How is calibration verified?
Users perform daily verification using NIST-traceable standard oil kits (e.g., Cannon-Manning Series); factory calibration certificates include uncertainty budgets per ISO/IEC 17025.
Does the DVPlus support continuous data logging?
Yes—via USB or Bluetooth, with configurable sampling intervals from 0.1 s to 600 s, and buffer memory capable of storing >10,000 data points offline.
